cc2538中文手册资料
ProductFolder Sample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityCC2538ZHCSAU4D–DECEMBER2012–REVISED APRIL2015CC2538适用于2.4GHz IEEE802.15.4、6LoWPAN和ZigBee®应用的强大无线微控制器片上系统1器件概述1.1特性•微控制器–强大的ARM®Cortex®-M3，具有代码预提取功能–高达32MHz的时钟速度–512KB、256KB或128KB系统内可编程闪存–支持片上无线升级(OTA)–支持双Zigbee应用配置–高达32KB的RAM（其中16kB在所有功率模式下具有保持功能）–cJTAG和JTAG调试•射频(RF)– 2.4GHz IEEE802.15.4兼容RF收发器–-97dBm的出色接收器灵敏度–在44dB的ACR干扰情况下可靠耐用–高达7dBm的可编程输出功率•安全硬件加速–面向未来的AES-128/256，安全散列算法(SHA)2硬件加密引擎–可选-用于安全密钥交换的ECC-128/256，RSA 硬件加速引擎–用于实现底层MAC功能性的无线命令选通处理器和数据包操作处理器•低功率–有源模式RX（CPU闲置）：20mA–0dBm时的有源模式TX（CPU闲置）：24mA –功率模式1（4μs唤醒时间，32KB RAM保持，完全寄存器保持）：0.6mA–功率模式2（休眠定时器运行，16KB RAM保持，配置寄存器保持）：1.3μA–功率模式3（外部中断，16KB RAM保持，配置寄存器保持）：0.4μA–宽电源电压范围（2V至3.6V）•外设–µDMA–4个通用定时器（每个定时器为32位或2x16位）–32位32kHz睡眠定时器–具有8通道和可配置分辨率的12位模数转换器(ADC)–电池监视器和温度传感器–USB2.0全速器件(12Mbps)–2个串行外设接口(SPI)–2个异步收发器(UART)–I2C–32个通用I/O引脚(28×4mA，4×20mA)–安全装置定时器•布局布线–8mm×8mm QFN56封装–可在高达125°C的工业温度下运行的耐用器件–极少的外部组件–异步网络只需一个单晶振•开发工具–CC2538开发套件–经美国联邦通信委员会(FCC)和欧洲电信标准协会(ETSI)规则认证的参考设计–为Contiki/6LoWPAN、智能电网、照明和Zigbee家庭自动化提供完整软件支持，其中包括示例应用和参考设计–Code Composer Studio™–IAR Embedded Workbench®用于ARM–SmartRF™Studio–SmartRF闪存编程器1.2应用•智能电网和家庭局域网•家庭和楼宇自动化•智能照明系统•无线传感器网络•物联网CC2538ZHCSAU4D–DECEMBER2012–REVISED 1.3说明CC2538xFnn是适用于高性能ZigBee应用的理想无线微控制器片上系统(SoC)。
该器件包含基于ARM Cortex M3的强大的MCU系统，具有高达32KB的片上RAM和高达512KB的片上闪存以及可靠的IEEE 802.15.4射频功能。
这使得该器件能够处理涉及安全性、要求严格的应用程序以及无线下载的复杂网络协议栈。
32个通用输入和输出(GPIO)以及串行外设接口可实现到电路板其它部分的简单连接。
强大的硬件安全加速器可在CPU处理应用任务的同时实现快速且高效的认证和加密。
具有保持功能的多个低功耗模式可实现从休眠状态快速唤醒并且显著降低执行周期任务时的能耗。
为了实现顺利平稳开发，CC2538xFnn包括一个强大的调试系统和一个综合性驱动器库。
为了减少应用闪存封装尺寸，CC2538xFnn ROM包含一个实用功能库和一个串行引导加载器。
CC2538与TI免费提供的稳健且全面的Z-Stack软件解决方案搭配使用，可提供市场上功能最强大、最稳定的ZigBee解决方案。
器件信息(1)器件型号封装封装尺寸CC2538RTQ RTQ(56)8.00mm x8.00mm(1)更多信息请参见节8，机械封装和可订购产品信息。
CC2538 ZHCSAU4D–DECEMBER2012–REVISED APRIL20151.4功能方框图图2538方框图CC2538ZHCSAU4D–DECEMBER2012–REVISED 内容1器件概述 (1)1.1特性 (1)1.2应用 (1)1.3说明 (2)1.4功能方框图 (3)2修订历史记录 (5)3Device Comparison (6)4Terminal Configuration and Functions (7)4.1Signal Descriptions (7)5Specifications (9)5.1Absolute Maximum Ratings (9)5.2ESD Ratings (9)5.3Recommended Operating Conditions (9)5.4Electrical Characteristics (10)5.5General Characteristics (11)5.6RF Receive Section (12)5.7RF Transmit Section (13)5.832-MHz Crystal Oscillator (14)5.932.768-kHz Crystal Oscillator (14)5.1032-kHz RC Oscillator (14)5.1116-MHz RC Oscillator (15)5.12RSSI/CCA Characteristics (15)5.13FREQEST Characteristics (15)5.14Frequency Synthesizer Characteristics (15)5.15Analog Temperature Sensor (15)5.16ADC Characteristics (16)5.17Control Input AC Characteristics (17)5.18DC Characteristics (17)5.19USB Interface DC Characteristics (17)5.20Thermal Resistance Characteristics for RTQPackage (18)6Applications,Implementation,and Layout (19)6.1Input,Output Matching (20)6.2Crystal (20)6.3On-Chip1.8-V Voltage-Regulator Decoupling (21)6.4Power-Supply Decoupling and Filtering (21)6.5References (21)7器件和文档支持 (22)7.1器件支持 (22)7.2文档支持 (23)7.3其他信息 (23)7.4商标 (24)7.5静电放电警告 (24)7.6出口管制提示 (24)7.7Glossary (24)8机械、封装和可订购信息 (25)8.1封装信息 (25)CC2538 ZHCSAU4D–DECEMBER2012–REVISED APRIL20152修订历史记录Changes from Revision C(February2015)to Revision D Page •Changed Figure6-1CC2538xFnn Application Circuit (19)Changes from Revision B(September2014)to Revision C Page •已更改“ZigBee Smart Energy1.x和ZigBee Light Link”至智能电网和照明 (1)•已添加“8通道”至“12位ADC” (3)•Added ESD Ratings table (9)CC2538ZHCSAU4D–DECEMBER2012–REVISED 3Device Comparison2538Family of Devices AvailableDEVICE FLASH(KB)RAM(KB)SECURITY HW AES/SHA SECURITY HW ECC/RSA CC2538SF5351232Yes YesCC2538SF2325632Yes YesCC2538NF5351232Yes NoCC2538NF2325632Yes NoCC2538NF1112816Yes No1345678910111213142424039383736353433323130294115561754185319522051215022492348244725462645274428431655DGND_USBD V D D XOSC32M_Q2USB_P P A 0USB_N P A 1DVDD_USBP A 2PB0P A 3PC7P A 4PC6P A 5PC5P A 6PC4P A 7DVDD D V D D PC3P D 0PC2P D 1PC1P D 2PC0R E S E T _N R_BIAS AVDD AVDD AVDD RF_N RF_P AVDD XOSC32M_Q1AVDD DCOUPL2PD5PD4PD3P B 6D C O U P L 1D V D DP B 1P B 2P B 3P B 4P B 5P B 7J T A G _T C KJ T A G _T M SP D 7/X O S C 32K _Q 2P D 6/X O S C 32K _Q 1A V D D _G U A R DP0142-01CC2538ZHCSAU4D –DECEMBER 2012–REVISED APRIL 20154Terminal Configuration and FunctionsConnect the exposed ground pad to a solid ground plane,as this is the ground connection for the chip.Figure 4-1.56-Pin RTQ Package (Top View)4.1Signal DescriptionsTable 4-1.Signal DescriptionsNAMENUMBERPIN TYPE DESCRIPTIONAVDD33,36,39,40,41Power (analog)2-V–3.6-V analog power-supply connection AVDD_GUARD 43Power (analog)2-V–3.6-V analog power-supply connection DCOUPL156Power (digital) 1.8-V regulated digital-supply decoupling capacitorDCOUPL232Power (digital) 1.8-V regulated digital-supply decoupling capacitor.Short this pin to pin 56.DGND_USB 1Ground (USB pads)USB groundDVDD 10,15,24,55Power (digital)2-V–3.6-V digital power-supply connection DVDD_USB 4Power (USB pads) 3.3-V USB power-supply connection JTAG_TCK 47Digital I/O JTAG TCK JTAG_TMS 46Digital I/O JTAG TMSPA016Digital/analog I/O GPIO port A pin 0.ROM bootloader UART RXD PA117Digital/analog I/O GPIO port A pin 1.ROM bootloader UART TXD PA218Digital/analog I/OGPIO port A pin 2.ROM bootloader SSI CLKCC2538ZHCSAU4D–DECEMBER2012–REVISED Table4-1.Signal Descriptions(continued)NAME NUMBER PIN TYPE DESCRIPTIONPA319Digital/analog I/O GPIO port A pin3.ROM bootloader SSI SELPA420Digital/analog I/O GPIO port A pin4.ROM bootloader SSI RXDPA521Digital/analog I/O GPIO port A pin5.ROM bootloader SSI TXDPA622Digital/analog I/O GPIO port A pin6PA723Digital/analog I/O GPIO port A pin7PB05Digital I/O GPIO port B pin0PB154Digital I/O GPIO port B pin1PB253Digital I/O GPIO port B pin2PB352Digital I/O GPIO port B pin3PB451Digital I/O GPIO port B pin4PB550Digital I/O GPIO port B pin5PB649Digital I/O GPIO port B pin6,TDI(JTAG)PB748Digital I/O GPIO port B pin7,TDO(JTAG)PC014Digital I/O GPIO port C pin0,20mA output capability,no pull-up or pull-down PC113Digital I/O GPIO port C pin1,20mA output capability,no pull-up or pull-down PC212Digital I/O GPIO port C pin2,20mA output capability,no pull-up or pull-down PC311Digital I/O GPIO port C pin3,20mA output capability,no pull-up or pull-down PC49Digital I/O GPIO port C pin4PC58Digital I/O GPIO port C pin5PC67Digital I/O GPIO port C pin6PC76Digital I/O GPIO port C pin7PD025Digital I/O GPIO port D pin0PD126Digital I/O GPIO port D pin1PD227Digital I/O GPIO port D pin2PD329Digital I/O GPIO port D pin3PD430Digital I/O GPIO port D pin4PD531Digital I/O GPIO port D pin5PD6/XOSC32K_Q144Digital/analog I/O GPIO port D pin6/32-kHz crystal oscillator pin1PD7/XOSC32K_Q245Digital/analog I/O GPIO port D pin7/32-kHz crystal oscillator pin1R_BIAS42Analog I/O External precision bias resistor for reference currentRESET_N28Digital input Reset,active-lowRF_N38RF I/O Negative RF input signal to LNA during RX Negative RF output signal from PA during TXRF_P37RF I/O Positive RF input signal to LNA during RX Positive RF output signal from PA during TXUSB_P2USB I/O USB differential data plus(D+)USB_N3USB I/O USB differential data minus(D–)XOSC32M_Q134Analog I/O32-MHz crystal oscillator pin1or external-clock input XOSC32M_Q235Analog I/O32-MHz crystal oscillator pin2CC2538ZHCSAU4D –DECEMBER 2012–REVISED APRIL 2015(1)Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device.These are stress ratings only,and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.(2)All voltage values are with respect to V SS ,unless otherwise noted.(3)Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device.These are stress ratings only,and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.5Specifications5.1Absolute Maximum Ratings (1)(2)(3)over operating free-air temperature range (unless otherwise noted)MINMAX UNIT Supply voltageAll supply pins must have the same voltage–0.3 3.9V Voltage on any digital pin –0.3V DD +0.3,≤3.9V Input RF level 10dBm T stg Storage temperature range–40125°C(1)JEDEC document JEP155states that 500-V HBM allows safe manufacturing with a standard ESD control process.(2)JEDEC document JEP157states that 250-V CDM allows safe manufacturing with a standard ESD control process.5.2ESD RatingsVALUEUNIT V ESD Electrostatic discharge (ESD)performance:Human body model (HBM),per ANSI/ESDA/JEDEC JS001(1)±1kV Charged device model (CDM),per JESD22-C101(2)All pins±500V(1)The CC2538contains a power on reset (POR)module and a brown out detector (BOD)that prevent the device from operating under unsafe supply voltage conditions.In the two lowest power modes,PM2and PM3,the POR is active but the BOD is powered down,which gives a limited voltage supervision.If the supply voltage is lowered to below 1.4V during PM2/PM3,at temperatures of 70°C or higher,and then brought back up to good operating voltage before active mode is re-entered,registers and RAM contents that are saved in PM2,PM3may become altered.Hence,care should be taken in the design of the system power supply to ensure that this does not occur.The voltage can beperiodically supervised accurately by entering active mode,as a BOD reset is triggered if the supply voltage is below approximately 1.7V.5.3Recommended Operating Conditionsover operating free-air temperature range (unless otherwise noted)MINMAX UNIT Operating ambient temperature range,T A –40125°C Operating supply voltage (1)23.6VCC2538ZHCSAU4D–DECEMBER2012–REVISED 5.4Electrical CharacteristicsMeasured on TI's CC2538EM reference design with T A=25°C,V DD=3V,and8-MHz system clock,unless otherwise noted. Boldface limits apply over the entire operating range,T A=–40°C to125°C,V DD=2V to3.6V,and f c=2394MHz to2507MHz.PARAMETER TEST CONDITIONS MIN TYP MAX UNITI core Core current consumption Digital regulator on.16-MHz RCOSC running.No radio,crystals,or peripherals active.CPU running at16-MHz with flash access7mA32-MHz XOSC running.No radio or peripherals active.CPU running at32-MHz with flash access,.13mA 32-MHz XOSC running,radio in RX mode,–50-dBm inputpower,no peripherals active,CPU idle20mA 32-MHz XOSC running,radio in RX mode at–100-dBm inputpower(waiting for signal),no peripherals active,CPU idle2427mA 32-MHz XOSC running,radio in TX mode,0-dBm outputpower,no peripherals active,CPU idle24mA 32-MHz XOSC running,radio in TX mode,7-dBm outputpower,no peripherals active,CPU idle34mA Power mode1.Digital regulator on;16-MHz RCOSC and32-MHz crystal oscillator off;32.768-kHz XOSC,POR,BODand sleep timer active;RAM and register retention0.6mAPower mode2.Digital regulator off;16-MHz RCOSC and32-MHz crystal oscillator off;32.768-kHz XOSC,POR,andsleep timer active;RAM and register retention1.32µAPower mode3.Digital regulator off;no clocks;POR active;RAM and register retention0.41µAI peri Peripheral Current Consumption(Adds to core current I core for each peripheral unit activated)General-purpose timer Timer running,32-MHz XOSC used120µA SPI300µA I2C0.1mA UART0.7mA Sleep timer Including32.753-kHz RCOSC0.9µA USB48-MHz clock running,USB enabled 3.8mA ADC When converting 1.2mAFlashErase12mABurst-write peak current8mA11Submit Documentation Feedback Product Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated (1)IEEE Std.802.15.4-2006:Wireless Medium Access Control (MAC)and Physical Layer (PHY)Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs)/getieee802/download/802.15.4-2006.pdf5.5General CharacteristicsMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYPMAXUNITWake-Up and Timing Power mode 1→active Digital regulator on,16-MHz RCOSC and 32-MHz crystal oscillator off.Start-up of 16-MHz RCOSC4µs Power mode 2or 3→active Digital regulator off,16-MHz RCOSC and 32-MHz crystal oscillator off.Start-up of regulator and 16-MHz RCOSC 136µs Active →TX or RXInitially running on 16-MHz RCOSC,with 32-MHz XOSC off 0.5ms With 32-MHz XOSC initially on 192µs RX/TX and TX/RX turnaround 192µs USB PLL start-up time With 32-MHz XOSC initially on32µsRadio Part RF frequency range Programmable in 1-MHz steps,5MHz between channels for compliance with (1)23942507MHz Radio baud rate As defined by (1)250kbps Radio chip rate As defined by(1)2MChip/sFlash Memory Flash erase cycles 20k Cycles Flash page size 2KB12Submit Documentation Feedback Product Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated(1)IEEE Std.802.15.4-2006:Wireless Medium Access Control (MAC)and Physical Layer (PHY)Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs)/getieee802/download/802.15.4-2006.pdf(2)Difference between center frequency of the received RF signal and local oscillator frequency (3)Difference between incoming symbol rate and the internally generated symbol rateMeasured on TI's CC2538EM reference design with T A =25°C,V DD =3V,and f c =2440MHz,unless otherwise noted.Bold limits apply over the entire operating range,T A =–40°C to 125°C,V DD =2V to 3.6V,and f c =2394MHz to 2507MHz.PARAMETERTEST CONDITIONSMIN TYP MAX UNIT Receiver sensitivityPER =1%,as specified by (1),normal operating conditions(25°C,3V,2440MHz)(1)requires –85dBm –97–92dBm PER =1%,as specified by (1),entire operating conditions(1)requires –85dBm–88dBm Saturation (maximum input level)PER =1%,as specified by (1)(1)requires –20dBm10dBm Adjacent-channel rejection,5-MHz channel spacing Wanted signal –82dBm,adjacent modulated channel at 5MHz,PER =1%,as specified by (1).(1)requires 0dB 44dBAdjacent-channel rejection,–5-MHz channel spacing Wanted signal –82dBm,adjacent modulated channel at –5MHz,PER =1%,as specified by (1).(1)requires 0dB 44dBAlternate-channel rejection,10-MHz channel spacing Wanted signal –82dBm,adjacent modulated channel at 10MHz,PER =1%,as specified by (1)(1)requires 30dB 52dBAlternate-channel rejection,–10-MHz channel spacing Wanted signal –82dBm,adjacent modulated channel at –10MHz,PER =1%,as specified by (1)(1)requires 30dB52dBChannel rejectionWanted signal at –82dBm.Undesired signal is an IEEE802.15.4modulated channel,stepped through all channels from 2405to 2480MHz.Signal level for PER =1%.dB≥20MHz ≤–20MHz 5151Blocking/desensitizationdBm5MHz from band edge 10MHz from band edge 20MHz from band edge 50MHz from band edge –5MHz from band edge –10MHz from band edge –20MHz from band edge –50MHz from band edge Wanted signal 3dB above the sensitivity level,CW jammer,PER =1%.Measured according to EN 300440class 2.–35–34–37–32–37–38–35–34Spurious emission.Only largest spuriousemission stated within each band.Conducted measurement with a 50-Ωsingle-ended load.Suitable for systems targeting compliance with EN 300328,EN 300440,FCC CFR47Part 15,and ARIB STD-T-66.dBm30MHz–1000MHz 1GHz–12.75GHz –80–80Frequency error tolerance (2)(1)requires minimum 80ppm ±150ppm Symbol rate error tolerance (3)(1)requires minimum 80ppm±1000ppm13Submit Documentation Feedback Product Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated (1)IEEE Std.802.15.4-2006:Wireless Medium Access Control (MAC)and Physical Layer (PHY)Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs)/getieee802/download/802.15.4-2006.pdf(2)TI's CC2538EM reference design is suitable for systems targeting compliance with EN 300328,EN 300440,FCC CFR47Part 15,and ARIB STD-T-66.(3)To improve margins for passing FCC requirements at 2483.5MHz and above when transmitting at 2480MHz,use a lower output-power setting or less than 100%duty cycle.Measured on TI's CC2538EM reference design with T A =25°C,V DD =3V and f c =2440MHz,unless otherwise noted.Boldface limits apply over the entire operating range,T A =–40°C to 125°C,V DD =2V to 3.6V,and f c =2394MHz to 2507MHz.PARAMETERTEST CONDITIONSMINTYP MAXUNIT Nominal output power Delivered to a single-ended 50-Ωload through a balun using maximum-recommended output-power setting (1)requires minimum –3dBm7dBm Programmable output-power range30dBSpurious emissionsMaximum recommended output power setting (2)Measured according to stated regulations.Only largest spurious emissionstated within each band.25–1000MHz (outside restricted bands)25–1000MHz (within FCC restricted bands)25–1000MHz (within ETSI restricted bands)1800–1900MHz (ETSI restricted band)5150–5300MHz (ETSI restricted band)1–12.75GHz (except restricted bands)At 2483.5MHz and above (FCC restricted band),f c =2480MHz (3)–56–58–58–60–54–51–42dBmError vector magnitude (EVM)Measured as defined by (1)using maximum-recommended output-power setting (1)requires maximum 35%.3%Optimum load impedance Differential impedance on the RF pins66+j64Ω14Submit Documentation Feedback Product Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated(1)Including aging and temperature dependency,as specified by IEEE Std.802.15.4-2006:Wireless Medium Access Control (MAC)and Physical Layer (PHY)Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs)/getieee802/download/802.15.4-2006.pdf5.832-MHz Crystal OscillatorMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT Crystal frequency32MHz Crystal frequency accuracy requirement (1)–4040ppm ESR Equivalent series resistance 61660ΩC 0Crystal shunt capacitance 1 1.97pF C LCrystal load capacitance 101316pF Start-up time0.3msPower-down guard time The crystal oscillator must be in power down for a guard time before using it again.This requirement is valid for all modes of operation.The need for power-down guard time can vary with crystal type and load.3ms(1)Including aging and temperature dependency,as specified by IEEE Std.802.15.4-2006:Wireless Medium Access Control (MAC)and Physical Layer (PHY)Specifications for Low-Rate Wireless Personal Area Networks (LR-WPANs)/getieee802/download/802.15.4-2006.pdf5.932.768-kHz Crystal OscillatorMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT Crystal frequency32.768kHz Crystal frequency accuracy requirement (1)–4040ppm ESR Equivalent series resistance 40130ΩC 0Crystal shunt capacitance 0.92pF C L Crystal load capacitance 1216pF Start-up time0.4s(1)The calibrated 32-kHz RC oscillator frequency is the 32-MHz XTAL frequency divided by 977.(2)Frequency drift when temperature changes after calibration (3)Frequency drift when supply voltage changes after calibration(4)When the 32-kHz RC oscillator is enabled,it is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator is performed while SLEEPCMD.OSC32K_CALDIS is 0.5.1032-kHz RC OscillatorMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT Calibrated frequency (1)32.753kHzFrequency accuracy after calibration ±0.2%Temperature coefficient (2)0.4%/°C Supply-voltage coefficient (3)3%/V Calibration time (4)2ms15Submit Documentation Feedback Product Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated (1)The calibrated 16-MHz RC oscillator frequency is the 32-MHz xtal frequency divided by 2.(2)When the 16-MHz RC oscillator is enabled,it is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator is performed while SLEEPCMD.OSC_PD is set to 0.5.1116-MHz RC OscillatorMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT Frequency (1)16MHzUncalibrated frequency accuracy ±18%Calibrated frequency accuracy ±0.6%±1%Start-up time10µs Initial calibration time (2)50µs(1)Real RSSI =Register value –offset5.12RSSI/CCA CharacteristicsMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT RSSI range100dB Absolute uncalibrated RSSI/CCA accuracy±4dB RSSI/CCA offset (1)73dB Step size (LSB value)1dB(1)Real FREQEST =Register value –offset5.13FREQEST CharacteristicsMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONS MIN TYP MAX UNIT FREQEST range ±250kHz FREQEST accuracy ±10kHz FREQEST offset (1)15kHz Step size (LSB value)7.8kHz5.14Frequency Synthesizer CharacteristicsMeasured on TI's CC2538EM reference design with T A =25°C,V DD =3V and f c =2440MHz,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNITPhase noise,unmodulated carrierAt ±1-MHz offset from carrier –111dBc/HzAt ±2-MHz offset from carrier –119At ±5-MHz offset from carrier–1265.15Analog Temperature SensorMeasured on TI's CC2538EM reference design with T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT Output at 25°C Measured using integrated ADC,using internal band-gap voltage reference and maximum resolution142212-bit ADC Temperature coefficient 4.2/1°C Voltage coefficient1/0.1V Initial accuracy without calibration ±10°C Accuracy using 1-point calibration (entire temperature range)±5°C Current consumption when enabled (ADC current not included)0.3mA16Submit Documentation Feedback Product Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated(1)Measured with 300-Hz sine-wave input and VDD as reference5.16ADC CharacteristicsT A =25°C and V DD =3V,unless otherwise noted.PARAMETER TEST CONDITIONSMIN TYP MAXUNIT Input voltageV DD is voltage on AVDD5pin 0V DD V External reference voltageV DD is voltage on AVDD5pin 0V DD V External reference voltage differential V DD is voltage on AVDD5pin 0V DDV Input resistance,signal Using 4-MHz clock speed 197k ΩFull-scale signal (1)Peak-to-peak,defines 0dBFS 2.97VENOB (1)Effective number of bitsSingle-ended input,7-bit setting 5.7BitsSingle-ended input,9-bit setting 7.5Single-ended input,10-bit setting 9.3Single-ended input,12-bit setting 10.8Differential input,7-bit setting 6.5Differential input,9-bit setting 8.3Differential input,10-bit setting 10.0Differential input,12-bit setting11.5Useful power bandwidth7-bit setting,both single and differential 0–20kHz THD (1)Total harmonic distortionSingle-ended input,12-bit setting,–6dBFS –75.2dB Differential input,12-bit setting,–6dBFS –86.6Signal to nonharmonic ratio (1)Single-ended input,12-bit setting70.2dB Differential input,12-bit setting79.3Single-ended input,12-bit setting,–6dBFS 78.8Differential input,12-bit setting,–6dBFS 88.9CMRR Common-mode rejection ratio Differential input,12-bit setting,1-kHz sine (0dBFS),limited by ADC resolution>84dB Crosstalk Single-ended input,12-bit setting,1-kHz sine (0dBFS),limited by ADC resolution <–84dB Offset Midscale–3mV Gain error0.68%DNL (1)Differential nonlinearity 12-bit setting,mean 0.05LSB 12-bit setting,maximum 0.9INL (1)Integral nonlinearity12-bit setting,mean 4.6LSB 12-bit setting,maximum 13.3SINAD (1)(–THD+N)Signal-to-noise-and-distortionSingle-ended input,7-bit setting 35.4dB Single-ended input,9-bit setting 46.8Single-ended input,10-bit setting57.5Single-ended input,12-bit setting 66.6Differential input,7-bit setting 40.7Differential input,9-bit setting 51.6Differential input,10-bit setting 61.8Differential input,12-bit setting 70.8Conversion time7-bit setting 20µs 9-bit setting 3610-bit setting 6812-bit setting132Current consumption 1.2mA Internal reference voltage 1.19V Internal reference VDD coefficient2mV/VRESET17Submit Documentation FeedbackProduct Folder Links:CC2538SpecificationsCopyright ©2012–2015,Texas Instruments Incorporated ADC Characteristics (continued)T A =25°C and V DD =3V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAX UNIT Internal reference temperature coefficient0.4mV/10°C(1)Shorter pulses may be recognized,but might not lead to a complete reset of all modules within the chip.5.17Control Input AC CharacteristicsT A =–40°C to 125°C,V DD =2V to 3.6V,unless otherwise noted.PARAMETERTEST CONDITIONSMIN TYPMAX UNIT System clock,f SYSCLK t SYSCLK =1/f SYSCLK The undivided system clock is 32MHz when crystal oscillator is used.The undivided system clock is 16MHz when calibrated 16-MHz RC oscillator is used.1632MHz RESET_N low duration (1)See item 1,Figure 5-1.This is the shortest pulse that is recognized as a complete reset pin request.1µs Interrupt pulse duration See item 2,Figure 5-1.This is the shortest pulse that is recognized as an interrupt request.20nsFigure 5-1.Control Input AC Characteristics5.18DC CharacteristicsT A =25°C,VDD =3V,drive strength set to high with CC_TESTCTRL.SC =1,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYPMAX UNIT Logic-0input voltage 0.5V Logic-1input voltage 2.5V Logic-0input current Input equals 0V –300300nA Logic-1input currentInput equals V DD–300300nA I/O-pin pullup and pulldown resistors 20k ΩLogic-0output voltage,4-mA pins Output load 4mA 0.5V Logic-1output voltage,4-mA pins Output load 4mA 2.4V Logic-0output voltage,20-mA pins Output load 20mA 0.5V Logic-1output voltage,20-mA pinsOutput load 20mA2.4V5.19USB Interface DC CharacteristicsT A =25°C,V DD =3V to 3.6V,unless otherwise noted.PARAMETERTEST CONDITIONSMINTYP MAXUNIT USB pad voltage output,high VDD 3.6V,4-mA load 3.4V USB pad voltage output,lowVDD 3.6V,4-mA load0.2V。
LM2578AM资料
LM2578A/LM3578A Switching RegulatorGeneral DescriptionThe LM2578A is a switching regulator which can easily be set up for such DC-to-DC voltage conversion circuits as the buck,boost,and inverting configurations.The LM2578A fea-tures a unique comparator input stage which not only has separate pins for both the inverting and non-inverting inputs, but also provides an internal1.0V reference to each input, thereby simplifying circuit design and p.c.board layout.The output can switch up to750mA and has output pins for its collector and emitter to promote design flexibility.An external current limit terminal may be referenced to either the ground or the V in terminal,depending upon the application.In addi-tion,the LM2578A has an on board oscillator,which sets the switching frequency with a single external capacitor from<1 Hz to100kHz(typical).The LM2578A is an improved version of the LM2578,offer-ing higher maximum ratings for the total supply voltage and output transistor emitter and collector voltages.Featuresn Inverting and non-inverting feedback inputsn 1.0V reference at inputsn Operates from supply voltages of2V to40Vn Output current up to750mA,saturation less than0.9V n Current limit and thermal shut downn Duty cycle up to90%Applicationsn Switching regulators in buck,boost,inverting,and single-ended transformer configurationsn Motor speed controln Lamp flasherConnection Diagram and Ordering InformationDual-In-Line Package00871129Order Number LM3578AM,LM2578AN or LM3578ANSee NS Package Number M08A or N08E February2005LM2578A/LM3578A Switching Regulator©2005National Semiconductor Corporation Functional Diagram00871101L M 2578A /L M 3578A 2Absolute Maximum Ratings(Note1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.Total Supply Voltage50V Collector Output to Ground−0.3V to+50V Emitter Output to Ground(Note2)−1V to+50V Power Dissipation(Note3)Internally limited Output Current750mA Storage Temperature−65˚C to+150˚C Lead Temperature(soldering,10seconds)260˚C Maximum Junction Temperature150˚CESD Tolerance(Note4)2kVOperating RatingsAmbient Temperature RangeLM2578A−40˚C≤T A≤+85˚C LM3578A0˚C≤T A≤+70˚C Junction Temperature RangeLM2578A−40˚C≤T J≤+125˚C LM3578A0˚C≤T J≤+125˚CElectrical CharacteristicsThese specifications apply for2V≤V IN≤40V(2.2V≤V IN≤40V for T J≤−25˚C),timing capacitor C T=3900pF,and25%≤duty cycle≤75%,unless otherwise specified.Values in standard typeface are for T J=25˚C;values in boldface type apply for operation over the specified operating junction temperature range.LM2578A/Symbol Parameter Conditions Typical LM3578A Units(Note5)Limit(Note6) OSCILLATORf OSC Frequency20kHz24kHz(max)16kHz(min)∆f OSC/∆T Frequency Drift with Temperature−0.13%/˚C Amplitude550mV p-p REFERENCE/COMPARATOR(Note7)V R Input Reference I1=I2=0mA and 1.0V Voltage I1=I2=1mA±1%(Note8) 1.050/1.070V(max)0.950/0.930V(min)∆V R/∆V IN Input Reference Voltage LineRegulationI1=I2=0mA and0.003%/VI1=I2=1mA±1%(Note8)0.01/0.02%/V(max) I INV Inverting Input Current I1=I2=0mA,duty cycle=25%0.5µALevel Shift Accuracy Level Shift Current=1mA 1.0%10/13%(max)∆V R/∆t Input Reference Voltage Long TermStability100ppm/1000h OUTPUTV C(sat)Collector Saturation Voltage I C=750mA pulsed,Emittergrounded 0.7V0.90/1.2V(max)V E(sat)Emitter Saturation Voltage I O=80mA pulsed, 1.4VV IN=V C=40V 1.7/2.0V(max)I CES Collector Leakage Current V IN=V CE=40V,Emitter grounded,Output OFF 0.1µA200/250µA(max)BV CEO(SUS)Collector-Emitter Sustaining Voltage I SUST=0.2A(pulsed),V IN=060V50V(min) CURRENT LIMITV CL Sense Voltage Shutdown Level Referred to V IN or Ground110mV(Note9)80mV(min)160mV(max)LM2578A/LM3578A3Electrical Characteristics(Continued)These specifications apply for 2V ≤V IN ≤40V (2.2V ≤V IN ≤40V for T J ≤−25˚C),timing capacitor C T =3900pF,and 25%≤duty cycle ≤75%,unless otherwise specified.Values in standard typeface are for T J =25˚C;values in boldface type apply for operation over the specified operating junction temperature range.LM2578A/Symbol ParameterConditionsTypical LM3578A Units(Note 5)Limit (Note 6)CURRENT LIMIT ∆V CL /∆T Sense Voltage Temperature Drift 0.3%/˚C I CLSense Bias CurrentReferred to V IN 4.0µA Referred to ground0.4µA DEVICE POWER CONSUMPTION I SSupply CurrentOutput OFF,V E =0V2.0mA3.5/4.0mA (max)Output ON,I C =750mA pulsed,14mAV E =0VNote 1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.DC and AC electrical specifications do not apply when operating the device beyond its rated operating conditions.Note 2:For T J ≥100˚C,the Emitter pin voltage should not be driven more than 0.6V below ground (see Application Information).Note 3:At elevated temperatures,devices must be derated based on package thermal resistance.The device in the 8-pin DIP must be derated at 95˚C/W,junction to ambient.The device in the surface-mount package must be derated at 150˚C/W,junction-to-ambient.Note 4:Human body model,1.5k Ωin series with 100pF.Note 5:Typical values are for T J =25˚C and represent the most likely parametric norm.Note 6:All limits guaranteed at room temperature (standard type face)and at temperature extremes (bold type face).Room temperature limits are 100%production tested.Limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC)methods.All limits are used to calculate AOQL.Note 7:Input terminals are protected from accidental shorts to ground but if external voltages higher than the reference voltage are applied,excessive current will flow and should be limited to less than 5mA.Note 8:I 1and I 2are the external sink currents at the inputs (refer to Test Circuit).Note 9:Connection of a 10k Ωresistor from pin 1to pin 4will drive the duty cycle to its maximum,typically 90%.Applying the minimum Current Limit Sense Voltage to pin 7will not reduce the duty cycle to less than 50%.Applying the maximum Current Limit Sense Voltage to pin 7is certain to reduce the duty cycle below 50%.Increasing this voltage by 15mV may be required to reduce the duty cycle to 0%,when the Collector output swing is 40V or greater (see Ground-Referred Current Limit Sense Voltage typical curve).Typical Performance CharacteristicsOscillator Frequency Changewith TemperatureOscillator Voltage Swing0087113200871133L M 2578A /L M 3578A 4Typical Performance Characteristics(Continued)Input Reference Voltage Drift with TemperatureCollector Saturation Voltage(Sinking Current,Emitter Grounded)0087113400871135Emitter Saturation Voltage(Sourcing Current,Collector at V in )Ground ReferredCurrent Limit Sense Voltage0087113600871137Current Limit Sense Voltage Drift with Temperature Current Limit Response Time for Various Over Drives0087113800871139LM2578A/LM3578A5Typical Performance Characteristics(Continued)Current Limit Sense Voltagevs Supply VoltageSupply Current0087114000871141Supply CurrentCollector Current with Emitter Output Below Ground0087114200871143Test Circuit*Parameter tests can be made using the test circuit shown.Select the desired V in ,collector voltage and duty cycle with adjustable power supplies.A digital volt meter with an input resistance greater than 100M Ωshould be used to measure the following:Input Reference Voltage to Ground;S1in either position.Level Shift Accuracy (%)=(T P3(V)/1V)x 100%;S1at I 1=I 2=1mAInput Current (mA)=(1V −T p3(V))/1M Ω:S1at I 1=I 2=0mA.Oscillator parameters can be measured at T p4using a fre-quency counter or an oscilloscope.The Current Limit Sense Voltage is measured by connecting an adjustable 0-to-1V floating power supply in series with the current limit terminal and referring it to either the ground or the V in terminal.Set the duty cycle to 90%and monitor test point T P5while adjusting the floating power supply voltage until the LM2578A’s duty cycle just reaches 0%.This voltage is the Current Limit Sense Voltage.The Supply Current should be measured with the duty cycle at 0%and S1in the I 1=I 2=0mA position.*LM2578A specifications are measured using automated test equipment.This circuit is provided for the customer’s convenience when checking parameters.Due to possible variations in testing conditions,the measured values from these testing procedures may not match those of the factory.L M 2578A /L M 3578A 6Test Circuit*(Continued)00871103 Op amp supplies are±15VDVM input resistance>100MΩ*LM2578max duty cycle is90%Definition of TermsInput Reference Voltage:The voltage(referred to ground) that must be applied to either the inverting or non-inverting input to cause the regulator switch to change state(ON or OFF).Input Reference Current:The current that must be drawn from either the inverting or non-inverting input to cause the regulator switch to change state(ON or OFF).Input Level Shift Accuracy:This specification determines the output voltage tolerance of a regulator whose output control depends on drawing equal currents from the inverting and non-inverting inputs(see the Inverting Regulator of Fig-ure21,and the RS-232Line Driver Power Supply of Figure 23).Level Shift Accuracy is tested by using two equal-value resistors to draw current from the inverting and non-inverting input terminals,then measuring the percentage difference in the voltages across the resistors that produces a controlled duty cycle at the switch output.Collector Saturation Voltage:With the inverting input ter-minal grounded thru a10kΩresistor and the output transis-tor’s emitter connected to ground,the Collector Saturation-Voltage is the collector-to-emitter voltage for a given collector current.Emitter Saturation Voltage:With the inverting input termi-nal grounded thru a10kΩresistor and the output transistor’s collector connected to V in,the Emitter Saturation Voltage is the collector-to-emitter voltage for a given emitter current. Collector Emitter Sustaining Voltage:The collector-emitter breakdown voltage of the output transistor,mea-sured at a specified current.Current Limit Sense Voltage:The voltage at the CurrentLimit pin,referred to either the supply or the ground terminal,which(via logic circuitry)will cause the output transistor toturn OFF and resets cycle-by-cycle at the oscillator fre-quency.Current Limit Sense Current:The bias current for theCurrent Limit terminal with the applied voltage equal to theCurrent Limit Sense Voltage.Supply Current:The IC power supply current,excluding thecurrent drawn through the output transistor,with the oscilla-tor operating.Functional DescriptionThe LM2578A is a pulse-width modulator designed for useas a switching regulator controller.It may also be used inother applications which require controlled pulse-width volt-age drive.A control signal,usually representing output voltage,fed intothe LM2578A’s comparator is compared with an internally-generated reference.The resulting error signal and the os-cillator’s output are fed to a logic network which determineswhen the output transistor will be turned ON or OFF.Thefollowing is a brief description of the subsections of theLM2578A.COMPARATOR INPUT STAGEThe LM2578A’s comparator input stage is unique in that boththe inverting and non-inverting inputs are available to theuser,and both contain a1.0V reference.This is accom-plished as follows:A1.0V reference is fed into a modifiedvoltage follower circuit(see FUNCTIONAL DIAGRAM).When both input pins are open,no current flows through R1LM2578A/LM3578A7Functional Description(Continued)and R2.Thus,both inputs to the comparator will have the potential of the 1.0V reference,V A .When one input,for example the non-inverting input,is pulled ∆V away from V A ,a current of ∆V/R1will flow through R1.This same current flows through R2,and the comparator sees a total voltage of 2∆V between its inputs.The high gain of the system,through feedback,will correct for this imbalance and return both inputs to the 1.0V level.This unusual comparator input stage increases circuit flex-ibility,while minimizing the total number of external compo-nents required for a voltage regulator system.The inverting switching regulator configuration,for example,can be set up without having to use an external op amp for feedback polarity reversal (see TYPICAL APPLICATIONS).OSCILLATORThe LM2578A provides an on-board oscillator which can be adjusted up to 100kHz.Its frequency is set by a single external capacitor,C 1,as shown in Figure 1,and follows the equationf OSC =8x10−5/C 1The oscillator provides a blanking pulse to limit maximum duty cycle to 90%,and a reset pulse to the internal circuitry.OUTPUT TRANSISTORThe output transistor is capable of delivering up to 750mA with a saturation voltage of less than 0.9V.(see Collector Saturation Voltage and Emitter Saturation Voltage curves).The emitter must not be pulled more than 1V below ground (this limit is 0.6V for T J ≥100˚C).Because of this limit,an external transistor must be used to develop negative output voltages (see the Inverting Regulator Typical Application).Other configurations may need protection against violation of this limit (see the Emitter Output section of the Applica-tions Information).CURRENT LIMITThe LM2578A’s current limit may be referenced to either the ground or the V in pins,and operates on a cycle-by-cycle basis.The current limit section consists of two comparators:one with its non-inverting input referenced to a voltage 110mV below V in ,the other with its inverting input referenced110mV above ground (see FUNCTIONAL DIAGRAM).The current limit is activated whenever the current limit terminal is pulled 110mV away from either V in or ground.Applications InformationCURRENT LIMITAs mentioned in the functional description,the current limit terminal may be referenced to either the V in or the ground terminal.Resistor R3converts the current to be sensed into a voltage for current limit detection.CURRENT LIMIT TRANSIENT SUPPRESSIONWhen noise spikes and switching transients interfere with proper current limit operation,R1and C1act together as a low pass filter to control the current limit circuitry’s response time.Because the sense current of the current limit terminal varies according to where it is referenced,R1should be less than 2k Ωwhen referenced to ground,and less than 100Ωwhen referenced to V in .00871104FIGURE 1.Value of Timing Capacitor vsOscillator Frequency00871115FIGURE 2.Current Limit,Ground Referred00871116FIGURE 3.Current Limit,V in ReferredL M 2578A /L M 3578A 8Applications Information(Continued)C.L.SENSE VOLTAGE MULTIPLICATIONWhen a larger sense resistor value is desired,the voltage divider network,consisting of R1and R2,may be used.This effectively multiplies the sense voltage by(1+R1/R2).Also, R1can be replaced by a diode to increase current limit sense voltage to about800mV(diode V f+110mV).UNDER-VOLTAGE LOCKOUTUnder-voltage lockout is accomplished with few external components.When V in becomes lower than the zener breakdown voltage,the output transistor is turned off.This occurs because diode D1will then become forward biased, allowing resistor R3to sink a greater current from the non-inverting input than is sunk by the parallel combination of R1 and R2at the inverting terminal.R3should be one-fifth of the value of R1and R2in parallel.MAXIMUM DUTY CYCLE LIMITINGThe maximum duty cycle can be externally limited by adjust-ing the charge to discharge ratio of the oscillator capacitor with a single external resistor.Typical values are50µA for the charge current,450µA for the discharge current,and a voltage swing from200mV to750mV.Therefore,R1is selected for the desired charging and discharging slopes and C1is readjusted to set the oscillator frequency.00871117 FIGURE4.Current Limit Transient Suppressor,Ground Referred00871118 FIGURE5.Current Limit Transient Suppressor,V in Referred00871119 FIGURE6.Current Limit Sense Voltage Multiplication,Ground Referred00871120FIGURE7.Current Limit Sense Voltage Multiplication,V in Referred00871122FIGURE8.Under-Voltage LockoutLM2578A/LM3578A9Applications Information(Continued)DUTY CYCLE ADJUSTMENTWhen manual or mechanical selection of the output transis-tor’s duty cycle is needed,the cirucit shown below may be used.The output will turn on with the beginning of each oscillator cycle and turn off when the current sunk by R2and R3from the non-inverting terminal becomes greater than the current sunk from the inverting terminal.With the resistor values as shown,R3can be used to adjust the duty cycle from 0%to 90%.When the sum of R2and R3is twice the value of R1,the duty cycle will be about 50%.C1may be a large electrolytic capacitor to lower the oscillator frequency below 1Hz.REMOTE SHUTDOWNThe LM2578A may be remotely shutdown by sinking a greater current from the non-inverting input than from the inverting input.This may be accomplished by selecting re-sistor R3to be approximately one-half the value of R1and R2in parallel.EMITTER OUTPUTWhen the LM2578A output transistor is in the OFF state,if the Emitter output swings below the ground pin voltage,the output transistor will turn ON because its base is clamped near ground.The Collector Current with Emitter Output Be-low Ground curve shows the amount of Collector current drawn in this mode,vs temperature and Emitter voltage.When the Collector-Emitter voltage is high,this current will cause high power dissipation in the output transistor and should be avoided.This situation can occur in the high-current high-voltage buck application if the Emitter output is used and the catch diode’s forward voltage drop is greater than 0.6V.A fast-recovery diode can be added in series with the Emitter output to counter the forward voltage drop of the catch diode (see Figure 2).For better efficiency of a high output current buck regulator,an external PNP transistor should be used as shown in Figure 16.SYNCHRONIZING DEVICESWhen several devices are to be operated at once,their oscillators may be synchronized by the application of an external signal.This drive signal should be a pulse waveform with a minimum pulse width of 2µs.and an amplitude from00871121FIGURE 9.Maximum Duty Cycle Limiting00871123FIGURE 10.Duty Cycle Adjustment00871124FIGURE 11.Shutdown Occurs when V L is High00871130FIGURE 12.D1Prevents Output Transistor from Improperly Turning ON due to D2’s Forward Voltage L M 2578A /L M 3578A 10Applications Information(Continued)1.5V to2.0V.The signal source must be capable of 1.)driving capacitive loads and 2.)delivering up to 500µA for each LM2578A.Capacitors C1thru CN are to be selected for a 20%slower frequency than the synchronization frequency.Typical ApplicationsThe LM2578A may be operated in either the continuous or the discontinuous conduction mode.The following applica-tions (except for the Buck-Boost Regulator)are designed for continuous conduction operation.That is,the inductor cur-rent is not allowed to fall to zero.This mode of operation has higher efficiency and lower EMI characteristics than the dis-continuous mode.BUCK REGULATORThe buck configuration is used to step an input voltage down to a lower level.Transistor Q1in Figure 14chops the input DC voltage into a squarewave.This squarewave is then converted back into a DC voltage of lower magnitude by the low pass filter consisting of L1and C1.The duty cycle,D,of the squarewave relates the output voltage to the input volt-age by the following equation:V out =D x V in =V in x (t on )/(t on +t off ).Figure 15is a 15V to 5V buck regulator with an output current,I o ,of 350mA.The circuit becomes discontinuous at 20%of I o(max),has 10mV of output voltage ripple,an effi-ciency of 75%,a load regulation of 30mV (70mA to 350mA)and a line regulation of 10mV (12≤V in ≤18V).Component values are selected as follows:R1=(V o −1)x R2where R2=10k ΩR3=V/I sw(max)R3=0.15Ωwhere:V is the current limit sense voltage,0.11VI sw(max)is the maximum allowable current thru the output transistor.L1is the inductor and may be found from the inductance calculation chart (Figure 16)as follows:Given V in =15VV o =5VI o(max)=350mA f OSC =50kHzDiscontinuous at 20%of I o(max).Note that since the circuit will become discontinuous at 20%of I o(max),the load current must not be allowed to fall below 70mA.00871125FIGURE 13.Synchronizing Devices00871105FIGURE 14.Basic Buck RegulatorLM2578A/LM3578A11Typical Applications(Continued)00871106V in =15V R3=0.15ΩV o =5V C1=1820pF V ripple =10mV C2=220µF I o =350mA C3=20pF f osc =50kHz L1=470µH R1=40k ΩD1=1N5818R2=10k ΩFIGURE 15.Buck or Step-Down RegulatorL M 2578A /L M 3578A 12LM2578A/LM3578A Typical Applications(Continued)00871131FIGURE16.DC/DC Inductance Calculator13Typical Applications(Continued)Step 1:Calculate the maximum DC current through the inductor,I L(max).The necessary equations are indicated at the top of the chart and show that I L(max)=I o(max)for the buck configuration.Thus,I L(max)=350mA.Step 2:Calculate the inductor Volts-sec product,E-T op ,according to the equations given from the chart.For the Buck:E-T op =(V in −V o )(V o /V in )(1000/f osc )=(15−5)(5/15)(1000/50)=66V-µs.with the oscillator frequency,f osc ,expressed in kHz.Step 3:Using the graph with axis labeled “Discontinuous At %I OUT ”and “I L(max,DC)”find the point where the desired maximum inductor current,I L(max,DC)intercepts the desired discontinuity percentage.In this example,the point of interest is where the 0.35A line intersects with the 20%line.This is nearly the midpoint of the horizontal axis.Step 4:This last step is merely the translation of the point found in Step 3to the graph directly below it.This is accom-plished by moving straight down the page to the point which intercepts the desired E-T op .For this example,E-T op is 66V-µs and the desired inductor value is 470µH.Since this example was for 20%discontinuity,the bottom chart could have been used directly,as noted in step 3of the chart instructions.For a full line of standard inductor values,contact Pulse Engineering (San Diego,Calif.)regarding their PE526XX series,or A.I.E.Magnetics (Nashville,Tenn.).A more precise inductance value may be calculated for the Buck,Boost and Inverting Regulators as follows:BUCKL =V o (V in −V o )/(∆I L V in f osc )BOOSTL =V in (V o −V in )/(∆I L f osc V o )INVERTL =V in |V o |/[∆I L (V in +|V o |)f osc ]where ∆I L is the current ripple through the inductor.∆I L is usually chosen based on the minimum load current expected of the circuit.For the buck regulator,since the inductor current I L equals the load current I O ,∆I L =2•I O(min)∆I L =140mA for this circuit.∆I L can also be interpreted as ∆I L =2•(Discontinuity Factor)•I Lwhere the Discontinuity Factor is the ratio of the minimum load current to the maximum load current.For this example,the Discontinuity Factor is 0.2.The remainder of the components of Figure 15are chosen as follows:C1is the timing capacitor found in Figure 1.C2≥V o (V in −V o )/(8f osc 2V in V ripple L1)where V ripple is the peak-to-peak output voltage ripple.C3is necessary for continuous operation and is generally in the 10pF to 30pF range.D1should be a Schottky type diode,such as the 1N5818or 1N5819.BUCK WITH BOOSTED OUTPUT CURRENTFor applications requiring a large output current,an external transistor may be used as shown in Figure 17.This circuit steps a 15V supply down to 5V with 1.5A of output current.The output ripple is 50mV,with an efficiency of 80%,a load regulation of 40mV (150mA to 1.5A),and a line regulation of 20mV (12V ≤V in ≤18V).Component values are selected as outlined for the buck regulator with a discontinuity factor of 10%,with the addition of R4and R5:R4=10V BE1B f /I pR5=(V in −V −V BE1−V sat )B f /(I L(max,DC)+I R4)where:V BE1is the V BE of transistor Q1.V sat is the saturation voltage of the LM2578A output transis-tor.V is the current limit sense voltage.B f is the forced current gain of transistor Q1(B f =30for Figure 17).I R4=V BE1/R4I p =I L(max,DC)+0.5∆I LL M 2578A /L M 3578A 14Typical Applications(Continued)BOOST REGULATORThe boost regulator converts a low input voltage into a higher output voltage.The basic configuration is shown in Figure 18.Energy is stored in the inductor while the transis-tor is on and then transferred with the input voltage to the output capacitor for filtering when the transistor is off.Thus,V o =V in +V in (t on /t off ).The circuit of Figure 19converts a 5V supply into a 15V supply with 150mA of output current,a load regulation of 14mV (30mA to 140mA),and a line regulation of 35mV (4.5V ≤V in ≤8.5V).R1=(V o −1)R2where R2=10k Ω.R3=V/(I L(max,DC)+0.5∆I L )where:∆I L =2(I LOAD(min))(V o /V in )∆I L is 200mA in this example.R4,C3and C4are necessary for continuous operation and are typically 220k Ω,20pF,and 0.0022µF respectively.C1is the timing capacitor found in Figure 1.C2≥I o (V o −V in )/(f osc V o V ripple ).00871108V in =15V R4=200ΩV o =5V R5=330ΩV ripple =50mV C1=1820pF I o =1.5AC2=330µFf osc =50kHz C3=20pF R1=40k ΩL1=220µH R2=10k ΩD1=1N5819R3=0.05ΩQ1=D45FIGURE 17.Buck Converter with Boosted Output Current00871109FIGURE 18.Basic Boost Regulator00871111V in =5V R4=200k ΩV o =15V C1=1820pF V ripple =10mV C2=470µF I o =140mA C3=20pF f osc =50kHz C4=0.0022µF R1=140k ΩL1=330µH R2=10k ΩD1=1N5818R3=0.15ΩFIGURE 19.Boost or Step-Up RegulatorLM2578A/LM3578A15Typical Applications(Continued)D1is a Schottky type diode such as a 1N5818or 1N5819.L1is found as described in the buck converter section,using the inductance chart for Figure 16for the boost configuration and 20%discontinuity.INVERTING REGULATORFigure 20shows the basic configuration for an inverting regulator.The input voltage is of a positive polarity,but the output is negative.The output may be less than,equal to,or greater in magnitude than the input.The relationship be-tween the magnitude of the input voltage and the output voltage is V o =V in x (t on /t off ).Figure 21shows an LM2578A configured as a 5V to −15V polarity inverter with an output current of 300mA,a load regulation of 44mV (60mA to 300mA)and a line regulation of 50mV (4.5V ≤V in ≤8.5V).R1=(|V o |+1)R2where R2=10k Ω.R3=V/(I L(max,DC)+0.5∆I L ).R4=10V BE1B f /(I L (max,DC)+0.5∆I L )where:V,V BE1,V sat ,and B f are defined in the “Buck Converter with Boosted Output Current”section.∆I L =2(I LOAD(min))(V in +|V o |)/V INR5is defined in the “Buck with Boosted Output Current”section.R6serves the same purpose as R4in the Boost Regulator circuit and is typically 220k Ω.C1,C3and C4are defined in the “Boost Regulator”section.C2≥I o |V o |/[f osc (|V o |+V in )V ripple ]L1is found as outlined in the section on buck converters,using the inductance chart of Figure 16for the invert con-figuration and 20%discontinuity.BUCK-BOOST REGULATORThe Buck-Boost Regulator,shown in Figure 22,may step a voltage up or down,depending upon whether or not the desired output voltage is greater or less than the input voltage.In this case,the output voltage is 12V with an input voltage from 9V to 15V.The circuit exhibits an efficiency of 75%,with a load regulation of 60mV (10mA to 100mA)and a line regulation of 52mV.R1=(V o −1)R2where R2=10k ΩR3=V/0.75AR4,C1,C3and C4are defined in the “Boost Regulator”section.D1and D2are Schottky type diodes such as the 1N5818or 1N5819.where:V d is the forward voltage drop of the diodes.V sat is the saturation voltage of the LM2578A output transis-tor.V sat1is the saturation voltage of transistor Q1.L1≥(V in −V sat −V sat1)(t on /I p )00871110FIGURE 20.Basic Inverting Regulator00871112V in =5V R4=190ΩV o =−15V R5=82ΩV ripple =5mV R6=220k ΩI o =300mA C1=1820pF I min =60mAC2=1000µFf osc =50kHz C3=20pF R1=160k ΩC4=0.0022µF R2=10k ΩL1=150µH R3=0.01ΩD1=1N5818FIGURE 21.Inverting RegulatorL M 2578A /L M 3578A16。
B-CC2640R2快速用户手册
CC2640R2快速用户手册本手册旨在让开发者快速的了解套件的软件和硬件资源，以及开发环境搭建，驱动程序安装等。
1开箱实验简单从机实验2硬件资源学习CC2640R2蓝牙5.0系列开发，一定要有硬件能够动手调试，首先需要一个资源丰富的开发板，还需要仿真器/下载器进行在线调试和程序烧写，代码调试过程中还需要将一些变量通过串口或者显示屏打印出来，或者显示其他信息，因此，配套一个液晶屏也是极好的。
最后，如果有条件还可以使用协议分析仪/BTool主机Dongle，来深入的了解蓝牙协议。
以下章节来一一介绍各个硬件。
2.1 LaunchIOT主板LaunchIOT是IOT++物联网开发板的总称，其中包含很多小型号，例如今天使用的LaunchIOT-CC2640R2，若您搭配的是CC2640或者CC2650，则相应型号为LaunchIOT-CC2640或LaunchIOT-CC2650，学习过程中遇到疑问，在开发者论坛提问时，尽量提供完整型号。
详细使用手册位置：0-套件软硬件资料/4-相关手册提示：LaunchIOT开发板的显示屏需要单独购买。
2.2 核心模块详细使用手册位置：0-套件软硬件资料/4-相关手册CC26系列开发套件可以搭配三种不同的核心板模块，分别是：●CC2640MOD●CC2650MOD●CC2640R2MOD每种模块又分为两个封装，分别是：●CC2640MOD-RGZ，7X7芯片封装●CC2640MOD-RSM，4X4芯片封装一般RGZ封装比RSM封装有着更多的GPIO和硬件外设，其他软件代码完全兼容。
学习时，建议选择RGZ封装，后期产品开发可根据根据需要选择小封装模块。
RGZ封装的三款模块如下图，完全Pin2Pin，可直接替换。
模块引脚定义和封装RSM封装的三款模块正在研发中，预计9月初上市。
2.3 显示屏1.44寸TFT彩色液晶显示屏，色彩丰富，刷新速度足够快，使用小型产品使用。
详细使用手册位置：0-套件软硬件资料/4-相关手册分辨率：128X128像素供电电压：3.3V显示屏引脚定义和封装，显示屏底部两个固定螺丝孔直径为2MM：2.4 仿真器/下载器我们采用的仿真器/下载器型号是XDS110-Lite，自主研发生产，兼容TI官方软件。
SomachineM258可编程控制器系统功能和变量库指南
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SetLEDBehaviour：决定 LED 的行为. . . . . . . . . . . . . . . .
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SetRTCDrift：每周调整实时时钟. . . . . . . . . . . . . . . . . .
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EIO0000000589 06/2011
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章 3 M258 PLCSystem 库数据类型 . . . . . . . . . . . .
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LED_ID：SetLEDBehaviour 功能 LedId 参数代码 . . . . . . . .
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LED_BHV：SetLEDBehaviour 功能 LedBhv 参数代码 . . . . . .
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LED_BHV_ERROR：检测到的 SetLEDBehaviour 功能错误代码 . .
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LED_COLOR：SetLEDBehaviour 功能 LedColor 参数代码 . . . .
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RTCSETDRIFT_ERROR：检测到的 SetRTCDrift 功能错误代码 . .
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DAY_OF_WEEK：SetRTCDrift 功能日期参数代码 . . . . . . . .
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PLC_R：控制器只读系统变量 . . . . . . . . . . . . . . . . . . .
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PLC_W：控制器读 / 写系统变量 . . . . . . . . . . . . . . . . . .
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1.3 SERIAL_R 和 SERIAL_W 结构 . . . . . . . . . . . . . . . . . .
本文档中提供的信息包含有关此处所涉及产品之性能的一般说明和 / 或技术特性。 本文档并非用于 （也不代替）确定这些产品对于特定用户应用场合的适用性或可靠 性。任何此类用户或集成者都有责任就相关特定应用场合或使用方面对产品执行适 当且完整的风险分析、评估和测试。 Schneider Electric 或是其任何附属机构或子公 司对于误用此处包含的信息而产生的后果概不负责。如果您有关于改进或更正此出 版物的任何建议，或者从中发现错误，请通知我们。
ISSPRO 3 3 8英寸可编程挡速表说明书
ISSPRO 3 3/8” PROGRAMMABLE TACHOMETERMicroprocessor VersionGENERAL INFORMATION:Operating Voltage:11 - 30 VDC: NOTE - Instrument comes equipped with a 12V lamp. Replace lampwith one of proper voltage when installing instrument on 24V systems. 24V Lamp Part # is GE-656Input: Gear tooth sensor, AC generator, alternator tap.Programmable Range: 1-255 pulses per engine revolution (gear teeth, magnets, etc). Transient Protection: +100 V, -400 V Reverse Voltage ProtectedHourmeter (optional): Operates only when engine runsCALIBRATION PROCEDURE:Remove the hole plug by pressing above the center enough to allow a small coin, screwdriver, etc., to be inserted in the slot behind the upperedge. Twist to remove.Each of the eight switches has a different value as shown in the table at the right. Add the switch values to equal the number of pulses per engine revolution. These switches will be set “on”. All others will be off. NOTE : The switch setting must be done with the power “OFF”. If power is left “ON”, changing the switch setting will have no effect on calibration until the power is interrupted.Example: Find switch numbers by subtracting the switch value from the remaining number. Always use the largest value that can be subtracted from the remainder for each successive step. For example, set the following switches “on” for a gear with 103 teeth:Switch Value New Remainder Switch NumberSwitchValue Start: 103 - 64= 39 #7 #1 = 1Remainderof: 39 - 32 = 7 #6 #2 = 2 Remainder of: 7 - 4 = 3 #3#3 = 4 Remainderof: 3 - 2 = 1 #2 #4 = 8 Remainder of: 1 - 1 = 0 #1#5 = 16 #6 = 32 Or use the calibration chart provided (pages 3 and 4)#7 = 64 #8 =128IMPORTANT! When changing switch settings on an installed tach, the power to the unit must be cycled either by turning the ignition switch off and then back on, OR by momentarily disconnecting the “hot” (red) wire.SIGNAL GENERATOR (Sender Unit): Generator is installed on tachometer cable drive of engine: NUMBER OF PULSES PER REV = (Number of sender pulses per turn) X (Ratio of take off RPM to engine RPM). NOTE: If the number of pulses per revolution (from equation) is not a whole number, the tach will not be accurate. In this case, select a generator so that this number is non-fractional. EXAMPLE: The number of sender pulses per turn is 15, and the take off ratio is 0.5 to 1 (.e. cam drive).Number of Pulses per Rev = 15 x 0.5 = 7.5. This will result in an error in the tachometer reading. Select a sender with an even number of pulses per turn (e.g. ISSPRO R8970). The number of pulses per revolution will then be a whole number, in this case, 15. FREQUENTLY USED SENDERS# PULSES PER REVFREQUENTLY USED SENDERS # PULSES PER REVDATCON 4-D-C 712678 SUN CP76436 DIXSON SG201A, SG201A1, SG202 2 SYNCHRO-START Minigen 30 ENGLER 870-0588 15 TELEFLEX 96042768 ISSPRO R8970, R894030 VDO (Old Style Engler) ISSPRO 300092 4 KIENZLE-ARGO 8-161-2370088 ZEMCO 4710 8 MOTOROLA 4-100 (7SG100), 4-111 (7SG100B) 30 ZEMCO 63145ROCKWELL 240R02-00130ALTERNATOR TAP INPUT: If a tap from the alternator has been provided, it can be used to provide the input signal.# PULSES PER REV = Number of Poles on Alternator X Diameter of Crank Pulley2 Diameter of Alternator PulleyINSTALLATION:Mount the tachometer in the dash panel and connect the wires as described below:Make all of your connections to the Black plug supplied and thenplug it in to the tachometer's white connector.Magnetic Sensor & signal Generator Applications Alternator Tap ApplicationConnect to ignition switched power source ← Red →Connect to ignition switched power sourceConnect to ground along with one of the sensor wires ← Black →Connect to groundConnect to other sensor wire ← White → No connectionConnect to dash lamp power ← Green →Connect to dash lamp powerOptional – se note 5 ← Violet →Connect to alternator tapINSTALLATION HINTS:1)Magnetic sensors only: Bring both sensor wires back to the connector. Don’t connect the sensor ground wire to a point which isphysically different from the tachometer ground.2)When power is applies, the needle should go to mid scale, then to the zero position. If it does not, there may be a bad connection inthe “hot” (red) wire, or in the ground wire circuit. Check power to the meter by measuring with a voltmeter at the plug (meter leadson the pins that attach to the red and black wires). If there is power at the plug, the problem is in the gauge.3)Low voltage (below 10.5 volts) will cause an inaccurate reading. Determine accuracy by comparing the reading with a phototach. Ifa problem exists, measure voltage with vehicle operating and meter connected. This can be done by connecting a voltmeter to apower source (i.e. fuse block, etc) and /or by connecting the voltmeter leads to the red and black wires where they enter the tach’swhite connector.4)Magnetic sensors only: If the tach reads zero, then “jumps” to a normal reading after a repeatable RPM, adjust the sensor so that it iscloser to the gear (generators cannot be adjusted).5)If the tach operates erratically, disconnect signal wire from the white input wire and connect it to the violet input wire. The violetinput has additional electrical noise filtering.Common Applications Microprocessor Tachometer CalibrationThe following table may be useful in calibrating the ISSPRO programmable tachometers in some ring gear sensing installations.This information is believed to be accurate, however, exceptions will occur and it is always best to verify the number of gear teethwhen in doubt.ENGINE # RING GEAR TEETH SWITCHES SET “ON”1,2,3,6,7103CUMMINS: L102,3,5,6,7118K6475,(855series) 103 1,2,3,6,7*NTC.FORMULAS*Some models of cabover Freightliners use SAE #1 flywheels and have 118 ring gear teeth.CAT: 32082,3,81343,4,5,8 33061561,5,6,71133406,3408DDA-DETROIT: 8V71, 8V92, 6-71, 12-71, 6V-92 118 2,3,5,6,72,4,81384-532,3,5,6,7118(domestic)MACK: ALLGM: 8.2 liter – SAE #2 flywheel 138 2,4,8(4 ¾” bolt centers on flywheel housing)8.2 liter – SAE #3 flywheel 126 2,3,4,5,6,7⅜” bolt centers on flywheel housing)(43 3/8” MICROPROCESSOR TACHOMETERSSWITCH SETTINGS TO PULSES PER REVOLUTIONSWITCHES SET “ON” SWITCHES SET “ON” SWITCHES SET “ON”Pulse per rev 1 2 3 4 5 6 7 8Pulseperrev12345678Pulseperrev123456781X 49X X X97X X X2X 50X X X98X X X3X X 51X X X X99 X X X X4X 52X X X100X X X5X X 53X X X X101 X X X X6X X 54X X X X102 X X X X7 X X X 55X X X X X103X X X X X8X 56X X X104X X X9X X 57X X X X105 X X X X 10X X 58X X X X106 X X X X 11 X X X 59X X X X X107X X X X X 12X X 60X X X X108X X X X 13 X X X 61X X X X X109X X X X X 14X X X 62X X X X X110X X X X X 15 X X X X 63X X X X X X111X X X X X X 16X 64X112X X X 17X X 65X X113X X X X 18X X 66X X114X X X X 19 X X X 67X X X115 X X X X X 20X X 68X X116X X X X 21X X X 69X X X117X X X X X22 X X X 70X X X118X X X X X23 X X X X 71X X X X119X X X X X X 24X X 72X X120X X X X25 X X X 73X X X121X X X X X26 X X X 74X X X122X X X X X27 X X X X 75X X X X123X X X X X X 28X X X 76X X X124X X X X X 29 X X X X 77X X X X125X X X X X X 30X X X X 78X X X X126X X X X X X 31X X X X X 79X X X X X127X X X X X X X 32X 80X X128X 33X X 81X X X129X X 34X X 82X X X130X X 35 X X X 83X X X X131X X X 36X X 84X X X132X X 37X X X 85X X X X133X X X38 X X X 86X X X X134X X X39 X X X X 87X X X X X135 X X X X 40X X 88X X X136X X 41X X X 89X X X X137X X X 42 X X X 90X X X X138X X X 43X X X X 91X X X X X139 X X X X 44 X X X 92X X X X140X X X 45X X X X 93X X X X X141X X X X 46X X X X 94X X X X X142X X X X 47X X X X X 95X X X X X X143 X X X X X 48X X 96X X144X X3 3/8” MICROPROCESSOR TACHOMETERSSWITCH SETTINGS TO PULSES PER REVOLUTIONSWITCHES SET “ON” SWITCHES SET “ON” SWITCHES SET “ON”Pulse per rev 1 2 3 4 5 6 7 8Pulseperrev12345678Pulseperrev12345678145X X X 185X X X X X225X X X X 146X X X 186X X X X X226X X X X 147 X X X X 187X X X X X X227 X X X X X 148X X X 188X X X X X228X X X X 149 X X X X 189X X X X X X229X X X X X 150 X X X X 190X X X X X X230X X X X X 151X X X X X 191X X X X X X X231X X X X X X 152X X X 192X X232X X X X 153 X X X X 193X X X233X X X X X 154 X X X X 194X X X234X X X X X 155X X X X X 195X X X X235X X X X X X 156 X X X X 196X X X236X X X X X 157X X X X X 197X X X X237X X X X X X 158X X X X X 198X X X X238X X X X X X 159X X X X X X 199X X X X X239X X X X X X X 160X X 200X X X240X X X X 161X X X 201X X X X241X X X X X 162X X X 202X X X X242X X X X X 163 X X X X 203X X X X X243X X X X X X 164X X X 204X X X X244X X X X X 165 X X X X 205X X X X X245X X X X X X 166 X X X X 206X X X X X246X X X X X X 167X X X X X 207X X X X X X247X X X X X X X 168X X X 208X X X248X X X X X 169 X X X X 209X X X X249X X X X X X 170 X X X X 210X X X X250X X X X X X 171X X X X X 211X X X X X251X X X X X X X 172 X X X X 212X X X X252X X X X X X 173X X X X X 213X X X X X253X X X X X X X 174X X X X X 214X X X X X254X X X X X X X 175X X X X X X 215X X X X X X255X X X X X X X X 176X X X 216X X X X177 X X X X 217X X X X X178 X X X X 218X X X X X179X X X X X 219X X X X X X180 X X X X 220X X X X X181X X X X X 221X X X X X X182X X X X X 222X X X X X X183X X X X X X 223X X X X X X X184 X X X X 224X X X。
CCM223,CCM253中文调试手册
Endress+Hauser销售中心 E+H中国服务供应商 深圳市百合顺电子科技有限公司 网站：
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Endress+Hauser销售中心 E+H中国服务供应商 深圳市百合顺电子科技有限公司 网站：
Endress+Hauser销售中心 E+H中国服务供应商 深圳市百合顺电子科技有限公司 网站：
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Endress+Hauser销售中心 E+H中国服务供应商 深圳市百合顺电子科技有限公司 网站：
Endress+Hauser销售中心 E+H中国服务供应商 深圳市百合顺电子科技有限公司 网站：
Endress+Hauser销售中心 E+H中国服务供应商 深圳市百合顺电子科技有限公司 网站：
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宽压输入隔离稳压正、负双输出系列产品数据手册说明书
ZY_WHAD-3W宽压输入隔离稳压正、负双输出系列——————————————概述ZY_WHAD-3W 系列电源模块是一种宽压输入隔离稳压正、负双输出电源模块，其转换效率高，高低温度特性好，带容性负载能力强，具有短路保护等功能，可持续短路，自恢复。
国际标准引脚方式，UL94-VO 阻燃封装，自然冷却，无需外加散热片，无需外加元件可直接使用，并可直接焊在PCB 板上。
电路结构为闭环自动控制系统，具有电压精度高等优点。
连接简单，是您前级电源的理想解决方案。
——————————————产品特性◆ 转换效率高达80%；◆ 输入电压：+9-36V ，+18-72V ； ◆ 双端稳压输出；◆ 输出精度：典型值±1%； ◆ 可持续短路，自恢复；◆ 外壳材料符合UL94-V0标准； ◆ 工作温度：-40℃～+85℃； ◆ 开关频率：80-550(PFM)； ◆隔离电压：1500VDC 。
————————————产品应用● 计算机外围设备； ● 工业控制系统； ● 数据通讯设备；● 分步式电源控制系统； ● 模拟/数字系统； ●……—————————————订购信息————————————————————————————————原理框图图 1 原理框图如图 1所示为该系列电源模块的原理框图。
该电路采用PFM 电路，内部具有反馈电路，输出精度高达±1%。
特别适用于输入电压变化范围大而且输入输出必须隔离的电路，如工业控制系统电源，数据通讯系统，分步式电源控制系统等。
广州致远电子股份有限公司修订历史目录1. 引脚信息 (1)1.1ZY_WHAD-3W引脚信息 (1)2. ZY_WHAD-3W产品选型 (2)3. ZY_WHAD-3W特性参数 (3)3.1参数列表 (3)3.2绝缘特性 (3)4. 机械尺寸 (4)5. 电路连接 (5)6. 免责声明 (6)1. 引脚信息1.1 ZY_WHAD-3W 引脚信息● 产品实物图图 1.1 ZY_WHAD-3W 实物图产品尺寸：长（L ）*宽（W ）*高（H ），31.8*20.3*9.5mm 。
时钟切换
CC2530中文数据手册P58两个为CC2530芯片内部自带的振荡器：一个为32kHz的RC振荡器，另外一个为16MHz 的RC振荡器。
此外，系统又外接了两个振荡器：一个为32.768的晶体振荡器，另外一个为32MHz的晶体振荡器。
RC振荡器：功耗低、精度低、启动快晶体振荡器：精度高、功耗大、启动慢32MHz晶体振荡器的启动时间对于某些应用而言太长了，因此CC2530可以运行在16MHz RC振荡器直到晶体振荡器稳定。
16MHz RC振荡器的功耗要少于晶体振荡器，但是由于它没有晶体振荡器精确，因此它不适用于射频收发器。
在需要32k低频时钟的地方，也需要选择一个32k时钟源进行时钟输出。
可见，默认情况下，芯片是采用RC振荡器的，一个高频16MHz一个低频32KHz。
但是其精度不高。
注意到例子程序中很多没有进行设置的，都采用了默认振荡器为时钟源。
注意：改变CLKCON.OSC位并不即刻生效。
这是因为在实际改变时钟源之前，被选择的时钟源要首先达到稳定。
还要注意：CLKCONSTA.CLKSPD位将反映系统时钟频率，因此它是CLKCON.OSC位的“镜子”。
未被选择作为系统时钟源的振荡器，通过设置SLEEP.OSC_PD为1(默认状态)将被设置为掉电模式。
因此，当32MHz晶体振荡器被选择作为系统时钟源后，16MHz RC振荡器可能被关闭，反之亦然。
当32MHz晶体振荡器被选择作为系统时钟源并且16MHz RC振荡器也被上电时，根据供电电压和运行温度，16MHZ RC振荡器将被不断校准以确保时钟稳定。
当16MHz RC振荡器被选择作为系统时钟源时，该校准不被执行。
看外部中断的例子程序：在mcu.h文件中而在hal_def.h文件中那么SLEEPCMD &= ~OSC_PD;就是取反第2位但是CC2530数据手册中关于SLEEPCMD的说明为SLEEPCMD (0xBE) – Sleep-Mode Control Command 第二位的说明如下：2 – 1 R/W Reserved. Always write as 1后来我试着用裸板写了切换晶振的代码发现不用设置SLEEPCMD没问题的，于是我就怀疑是向下兼容的问题是查了CC2430的DA TASHEETOSC_PD描述如下难道说TI的CC2530的协议栈中的例子没有更新啊！我初学者太相信TI了这是TI在从CC2430升级到CC2530时，Hal_board_cfg.h却没有更新，它初始用到的寄存器在CC2530中是没有的我也遇到了这个问题，这是TI英文网站上国外网友的回答，相信大家都能看明白。
SmartController CR2530 CR2532 编程手册说明书
7391003 / 08 10 / 2018内容1关于本手册51.1版权 (5)1.2概述：ecomatmobile 装置文档模块 (6)1.3符号和格式是什么意思？ (7)1.4本文档的结构是怎样的？ (8)1.5说明沿革(CR253n) (10)2安全说明112.1请注意！ (11)2.2需要预先具备哪些知识？ (12)2.3控制器的启动运行状况 (12)2.4注意事项：序列号 (12)3系统描述133.1关于装置的信息 (13)3.2硬件说明 (14)3.2.1硬件结构 (14)3.2.2输入端（技术） (17)3.2.3输出端（技术） (23)3.2.4关于配线的注意事项 (30)3.2.5关于簧片继电器的安全说明 (30)3.2.6状态LED (31)3.3接口说明 (32)3.3.1CAN 接口 (33)3.4软件说明 (34)3.4.1装置的软件模块 (35)3.4.2CODESYS 项目的编程说明 (37)3.4.3工作状态 (41)3.4.4装置的性能极限 (44)4配置474.1设定运行时系统 (48)4.1.1重新安装运行时系统 (48)4.1.2更新运行时系统 (50)4.1.3检验安装 (50)24.2设定编程系统 (51)4.2.1手动设定编程系统 (51)4.2.2通过模板设定编程系统 (55)4.3一般功能配置 (55)4.3.1系统变量 (55)4.4输入端和输出端功能配置 (56)4.4.1配置输入端和输出端（默认设定） (56)4.4.2配置输入端 (57)4.4.3配置输出端 (62)4.5变量 (67)4.5.1保留变量 (67)4.5.2网络变量 (68)5IFM 功能元件695.1针对装置CR2530 的IFM 库 (69)5.1.1库ifm_CR2530_V03yyzz.LIB (70)5.1.2库ifm_RAWCan_NT_Vxxyyzz.LIB (71)5.1.3库ifm_CANopen_NT_Vxxyyzz.LIB (72)5.1.4库ifm_J1939_NT_Vxxyyzz.LIB (73)5.2针对装置CR2530 的IFM 功能元件 (75)5.2.1输出端功能元件 (75)5.2.2功能元件：RAW-CAN（第2 层） (77)5.2.3功能元件：CANopen (115)5.2.4功能元件：SAE J1939 (172)5.2.5功能元件：处理输入值 (216)5.2.6功能元件：输出端功能 (229)5.2.7功能元件：系统 (238)6诊断和错误处理2656.1诊断 (265)6.2故障 (265)6.3响应系统错误 (266)6.3.1响应错误消息的进程示例 (266)6.4CAN / CANopen: 错误和错误处理 (266)7附录2677.1系统标志 (268)7.2地址分配和I/O 工作模式 (269)7.2.1I/O 地址/变量 (269)7.2.2可能的输入端/输出端工作模式 (272)37.3集成I/O 模块：说明 (276)7.3.1系统说明I/O 模块ExB01 (276)7.3.2I/O 模块的配置 (291)7.3.3集成I/O 模块的对象目录 (305)7.3.4I/O 模块的运行 (346)7.3.5针对集成ExB01 I/O 模块的系统标志 (349)7.3.6I/O 模块错误消息 (350)7.4错误表 (353)7.4.1错误标志 (353)7.4.2错误：CAN / CANopen (353)8专业术语355 9指数37241 关于本手册内容版权 (5)概述：ecomatmobile 装置文档模块 (6)符号和格式是什么意思？ (7)本文档的结构是怎样的？ (8)说明沿革(CR253n) (10)2021.1 版权46224 © ifm electronic gmbh保留所有权利。
cc2538中文手册资料
cc2538中⽂⼿册资料ProductFolder Sample &BuyTechnicalDocumentsTools &SoftwareSupport &CommunityCC2538ZHCSAU4D–DECEMBER2012–REVISED APRIL2015CC2538适⽤于2.4GHz IEEE802.15.4、6LoWPAN和ZigBee?应⽤的强⼤⽆线微控制器⽚上系统1器件概述1.1特性微控制器–强⼤的ARM?Cortex?-M3，具有代码预提取功能–⾼达32MHz的时钟速度–512KB、256KB或128KB系统内可编程闪存–⽀持⽚上⽆线升级(OTA)–⽀持双Zigbee应⽤配置–⾼达32KB的RAM（其中16kB在所有功率模式下具有保持功能）–cJTAG和JTAG调试射频(RF)– 2.4GHz IEEE802.15.4兼容RF收发器–-97dBm的出⾊接收器灵敏度–在44dB的ACR⼲扰情况下可靠耐⽤–⾼达7dBm的可编程输出功率安全硬件加速–⾯向未来的AES-128/256，安全散列算法(SHA)2硬件加密引擎–可选-⽤于安全密钥交换的ECC-128/256，RSA 硬件加速引擎–⽤于实现底层MAC功能性的⽆线命令选通处理器和数据包操作处理器低功率–有源模式RX（CPU闲置）：20mA–0dBm时的有源模式TX（CPU闲置）：24mA –功率模式1（4µs唤醒时间，32KB RAM保持，完全寄存器保持）：0.6mA –功率模式2（休眠定时器运⾏，16KB RAM保持，配置寄存器保持）：1.3µA–功率模式3（外部中断，16KB RAM保持，配置寄存器保持）：0.4µA–宽电源电压范围（2V⾄3.6V）?外设–µDMA–4个通⽤定时器（每个定时器为32位或2x16位）–32位32kHz睡眠定时器–具有8通道和可配置分辨率的12位模数转换器(ADC)–电池监视器和温度传感器–USB2.0全速器件(12Mbps)–2个串⾏外设接⼝(SPI)–2个异步收发器(UART)–I2C–32个通⽤I/O引脚(28×4mA，4×20mA)–安全装置定时器布局布线–8mm×8mm QFN56封装–可在⾼达125°C的⼯业温度下运⾏的耐⽤器件–极少的外部组件–异步⽹络只需⼀个单晶振开发⼯具–CC2538开发套件–经美国联邦通信委员会(FCC)和欧洲电信标准协会(ETSI)规则认证的参考设计–为Contiki/6LoWPAN、智能电⽹、照明和Zigbee家庭⾃动化提供完整软件⽀持，其中包括⽰例应⽤和参考设计–Code Composer Studio?–IAR Embedded Workbench?⽤于ARM–SmartRF?Studio–SmartRF闪存编程器1.2应⽤智能电⽹和家庭局域⽹?家庭和楼宇⾃动化?智能照明系统?⽆线传感器⽹络?物联⽹CC2538ZHCSAU4D–DECEMBER2012–REVISED /doc/8cb2926dec3a87c24128c4ad.html1.3说明CC2538xFnn是适⽤于⾼性能ZigBee应⽤的理想⽆线微控制器⽚上系统(SoC)。
cc0258b规格书
cc0258b规格书CC0258B规格书引言CC0258B规格书是一份详细描述产品规格和性能要求的文档。
本文将对CC0258B规格书的内容进行详细阐述，包括产品描述、功能特点、技术要求、性能指标等方面，旨在为用户提供全面准确的信息。
一、产品描述CC0258B是一款具有先进功能和高性能的产品。
它采用先进的技术和材料制造而成，具有结构紧凑、外观美观、易于安装和操作的特点。
该产品广泛应用于各种领域，如工业自动化、电力系统、通信设备等。
二、功能特点1. 高精度测量：CC0258B具有高精度的测量功能，能够准确测量各种物理量，如温度、压力、湿度等。
2. 多种接口支持：该产品支持多种接口，如RS232、RS485、以太网等，便于与其他设备进行数据交互。
3. 强大的数据处理能力：CC0258B具备强大的数据处理能力，能够快速处理大量数据，并提供准确可靠的结果。
4. 多种工作模式：用户可以根据实际需求选择不同的工作模式，如自动模式、手动模式等，以满足不同的使用场景。
5. 高可靠性和稳定性：该产品采用优质材料和先进制造工艺，具有高可靠性和稳定性，能够在恶劣环境下长时间稳定工作。
三、技术要求1. 输入电压范围：CC0258B的输入电压范围为AC100V-240V，适用于各种电源标准。
2. 工作温度：该产品的工作温度范围为-20℃至60℃，能够适应不同的工作环境。
3. 通信协议：CC0258B支持多种通信协议，如Modbus、CAN等，便于与其他设备进行联网通信。
4. 安全性能：该产品具有良好的安全性能，符合相关安全标准，能够有效保护用户的安全和设备的稳定运行。
5. 抗干扰能力：CC0258B具有良好的抗干扰能力，能够在复杂电磁环境下正常工作。
四、性能指标1. 精度：CC0258B的测量精度为±0.5%，能够提供高精度的测量结果。
2. 响应时间：该产品具有快速的响应时间，能够在短时间内提供准确的测量结果。
3. 通信速率：CC0258B支持高速通信，通信速率可达到10Mbps，能够实现快速数据传输。