XT1511规格书(SK6812)完全代替WS2812B
WS2812BLED灯工作原理
WS2812BLED灯工作原理
WS2812B灯的控制电路中包含有一个可编程的驱动器芯片和三个LED
颜色驱动器。
每个颜色驱动器都可以控制一个发光二极管。
驱动器芯片有
一个输入引脚，一个数据线和一个电源引脚。
通过向输入引脚输入数字信号，可以控制LED的亮度和颜色。
数据线上的每个时钟周期包含24位数据，每个数据位都表示了
WS2812B灯的一个颜色分量（红、绿、蓝）。
数据位由高电平和低电平两
个时间间隔表示，其比例决定了数据位的值。
每个数据位的高电平时间决
定了其值为1还是0，而低电平时间是固定的，用来定义数据间隔。
在一个时钟周期内，数据位的传输顺序是从最高有效位到最低有效位，先传输红色分量，然后是绿色分量，最后是蓝色分量。
通过发送一系列的24位数据，可以控制每个灯的颜色和亮度。
总之，WS2812BLED灯通过控制信号输入来控制发光二极管的颜色和
亮度。
它的工作原理是使用串行同步通信协议，通过将高电平和低电平的
时间间隔映射到颜色数据位来实现控制。
此外，灯的驱动器芯片可以通过
外部电源引脚提供电力，以满足不同应用的功率需求。
ws2812b手册解析笔记
ws2812b手册解析笔记
一、WS2812B简介
WS2812B是一款高性能、低功耗的LED驱动器芯片，广泛应用于各种照明和显示场景。
本文将对WS2812B的手册进行解析，帮助读者更好地理解和应用这款芯片。
二、WS2812B工作原理
WS2812B采用独特的串行双向通信技术，实现与主控器的数据传输。
该芯片具有12位灰度级，可支持高达1600万色的显示效果。
其内部集成了稳压器、current regulator和逻辑电路，使得系统设计更加简洁。
三、WS2812B应用领域
WS2812B适用于各种室内外照明、显示屏、景观照明等场合。
例如，它可以应用于商业照明、家居照明、广告牌、舞台灯光等场景。
四、WS2812B操作指南
1.连接：将WS2812B与控制器相连，通过数据线进行通信。
2.编程：根据实际需求，编写控制器程序，控制WS2812B的亮度、颜色等参数。
3.驱动：为WS2812B提供适当的电源，确保其正常工作。
4.调试：通过实时监控亮度、颜色等参数，调整控制器程序，实现预期效果。
五、WS2812B实战案例解析
1.案例一：WS2812B在智能家居照明的应用
2.案例二：WS2812B在户外广告牌中的应用
3.案例三：WS2812B在舞台灯光设备中的应用
六、总结与展望
WS2812B作为一种高性能的LED驱动器芯片，具有广泛的应用前景。
通过本文的解析，读者可以更好地了解WS2812B的工作原理、应用领域以及操作指南。
在实际应用中，不断调整和优化控制器程序，实现更加绚丽、节能的照明效果。
ws2812b手册解析笔记
ws2812b手册解析笔记摘要：1.引言2.WS2812B 芯片介绍3.WS2812B 引脚功能4.WS2812B 工作原理5.WS2812B 编程及应用6.结论正文：【引言】WS2812B 是一款广泛应用于LED 灯带、显示屏等领域的LED 驱动芯片。
为了更好地了解其工作原理和应用方法，本文将对WS2812B 的手册进行解析，为大家提供参考。
【WS2812B 芯片介绍】WS2812B 是由上海慧朔微电子有限公司生产的一款RGB LED 驱动芯片，具有高稳定性、低功耗、恒流驱动等特点。
它采用3-in-1 的封装形式，将红、绿、蓝三个发光二极管（LED）集成在一起，可以实现多种颜色效果。
【WS2812B 引脚功能】WS2812B 具有以下引脚功能：- VCC：供电引脚，输入电压范围为3.0V-5.5V- GND：地引脚- DIN：数据输入引脚，用于接收外部发送的数据- CLK：时钟引脚，用于同步数据传输- VSYNC：帧同步引脚，用于同步显示刷新- HSYNC：行同步引脚，用于同步数据传输- LED-OUT：LED 驱动输出引脚，用于驱动LED 灯珠【WS2812B 工作原理】WS2812B 的工作原理如下：1.接通电源，将VCC 引脚连接到3.0V-5.5V 电源。
2.数据输入引脚DIN 接收外部发送的数据，数据传输速率为800kbps。
3.时钟引脚CLK 用于同步数据传输，数据在每个时钟周期的上升沿传输。
4.帧同步引脚VSYNC 和行同步引脚HSYNC 用于同步显示刷新，确保画面稳定显示。
5.LED 驱动输出引脚LED-OUT 将接收到的数据转换为驱动LED 灯珠的电流信号。
【WS2812B 编程及应用】WS2812B 的编程及应用主要包括以下步骤：1.连接电路：将WS2812B 的引脚与外部电路连接，如微控制器、电源等。
2.初始化：配置微控制器的相关寄存器，初始化WS2812B 的工作状态。
ICETEK-F2812-A板及教学实验箱说明书
电 话:010-82671912/13/14/15
传 真:010-82671916
网 址:
技术支持:welcome@
目录
目录
第一部分 ICETEK-F2812-A 评估板硬件使用指导
一．用户板的外围接口
1
一、 用户板的外围接口 二、 用户板的硬件外设接口说明
一、 用户板的外围接口
下面是 ICETEK-F2812-A 板的实物图，我们将通过此图描述整个板子的外部接口。
POW_LED 电源指示灯
P1:34 芯外扩总线
P3:34 芯外扩总线
P2：34 芯外扩总线
P4：34 芯外扩总线
JP2
RESET:手动复位开关
JP3 AD 参考电压选择
USER_SW: 用户使用的开关 5V 电源开关 用户使用的指示灯（USER_LED）
模式选择跳线
POWER: 5V 电源接口 CAN 总线接口
图 1.1
DSP_JTAG:DSP 仿真器接口 DB9:九针 D 型串口 F2812-A 板的实物图
1
北京瑞泰创新科技有限责任公司——ICETEK-F2812- USB/PP -EDU 教学系统说明书
我们将详细说明这些接口的功能和特征定义。首先，表 1.1 归纳总结了这些跳线和功能分类.
表 1.1：接口和功能分类
功能分类 接口名称
接口定义
电源接口 POWER
5V 电源输入
外设接口 DB9
九针 D 型串口
P1
34 芯外扩总线
P2
34 芯外扩总线
总线接口 P3
34 芯外扩总线
P4
34 芯外扩总线
指示灯 辅助接口
88
II
SK6812灯珠参数
内置信号整形电路，任何一个像素点收到信号后经过波形整形再输出，保证线路波形畸变不会累加。
内置上电复位和掉电复位电路。
每个像素点的三基色颜色可实现256级亮度显示，完成16777216种颜色的全真色彩显示，扫描频率不低于400Hz/s。
LED点光源,LED像素屏,LED异形屏，各种电子产品，电器设备跑马灯。
● 控制电路与RGB芯片集成在一个5050封装的元器件中，构成一个完整的外控像素点。
● 内置信号整形电路，任何一个像素点收到信号后经过波形整形再输出，保证线路波形畸变不会累加。
● 内置上电复位和掉电复位电路。
● 每个像素点的三基色颜色可实现256级亮度显示，完成16777216种颜色的全真色彩显示，扫描频率不低于
400Hz/s。
● 串行级联接口，能通过一根信号线完成数据的接收与解码。
● 任意两点传传输距离在不超过5米时无需增加任何电路。
● 当刷新速率30帧/秒时，低速模式级联数不小于512点，高速模式不小于1024点。
● 数据发送速度可达800Kbps。
● 光的颜色高度一致，性价比高。
普朗克光电科技生产的5050内置IC6812是一个集控制电路与发光电路于一体的智能外控LED光源。其外型与一个5050LED灯珠相同，每个元件即为一个像素点。像素点内部包含了智能数字接口数据锁存信号整形放大驱动电路，还包含有高精度的内部振荡器和5V高压可编程定电流控制部分，有效保证了像素点光的颜色高度一致。数据协议采用单线归零码的通讯方式，像素点在上电复位以后，DIN端接受从控制器传输过来的数据，首先送过来的24bit数据被第一个像素点提取后，送到像素点内部的数据锁存器，剩余的数据经过内部整形处理电路整形放大后通过DO端口开始转发输出给下一个级联的像素点，每经过一个像素点的传输，信号减少24bit。像素点采用自动整形转发技术，使得该像素点的级联个数不受信号传送的限制，仅仅受限信号传输速度要求。LED具有低电压驱动，环保节能，亮度高，散射角度大，一致性好，超低功率，超长寿命等优点。将控制电路集成于LED上面，电路变得更加简单，体积小，安装更加简便.
蓝牙音频开发包Winbond W681360编解码器板用户手册说明书
Bluetooth Audio Development Pack Winbond W681360 Codec BoardUser GuidePart Number ACC-005The information contained in this document is subject to change without notice. EZURiO Ltd makes no warranty of any kind with regard to this material including, but not limited to, the implied warranties of merchant ability and fitness for a particular purpose. EZURiO Ltd shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.© Copyright 2006 EZURiO Limited. All rights reserved.No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of EZURiO.Other product or company names used in this publication are for identification purposes only and may be trademarks of their respective owners.Bluetooth® Development KitWinbond Audio Codec BoardPart Number: ACC-0051.General DescriptionThe EZURiO Winbond Codec Evaluation Board plugs into the EZURiO Developers kit and allows you to rapidly test and evaluate Bluetooth audio applications using the EZURiO Bluetooth Intelligent Serial Module to implement the wireless link.The ACC-005 evaluation board is based on the Winbond W681360 codec - a 3V, single channel, 13 bit linear voice-band codec, which is pin compatible to the Motorola MC145483. The codec is used to digitise incoming audio from the microphone into PCM data and convert the PCM digital audio output of the Bluetooth chip into an analogue signal for the headphones. The codec board has a microphone input and headphone output which are compatible with standard PC headsets.The W681630 codec has several features such as power down mode and high pass filter disable (to allow frequencies down to DC to be used). The ACC-005 codec evaluation board provides options to allow these features to be tested.The W681360 incorporates a feature that allows the volume of the codec output to be digitally controlled via 3 bits of the PCM data stream. The BISM II provides an AT command (ATS589) that allows you to control the volume of the codec.This document provides you with information to prototype and evaluate your own audio application. Once you have tried out your application, you will be able to design your own audio solution based around the Winbond codec and the EZURiO Bluetooth Intelligent Serial module.Bluetooth is a trademark owned by Bluetooth SIG, Inc., USA and licensed to EZURIO Ltd.2.OverviewThe codec board is powered by an on-board 3.3V regulator to reduce noise to a minimum. The PCM control signals for the codec go directly to the Bluetooth module on the motherboard via the 10-way connector, as do the 3 push button switches. This allows the switches to be used with an external program that implements the upper portion of headset or Handsfree profile.The microphone input, designed to interface to PC compatible headsets, has a fixed gain of 16 set by external components to the codec (the amplifier itself is part of the codec). Part of the microphone signal is mixed into the headphone output signal via VR2. This feature is known as “sidetone” and allows the user to hear their own voice when speaking. It is commonly used in telephony applications to give the user the necessary audio feedback that their ears expect.The audio output gain is by default fixed at 1. By fitting VR1, the audio gain can be made adjustable.The 120mW stereo output amplifier U3 ensures that the codec board can drive standard 32Ωstereo headphones while keeping total harmonic distortion down to 0.1%.Component PlacementNote that not allcomponents are fitted –non-fitted components areshown without pads. Referto Section 7 for details ofcomponent fitment andspecification.3.Codec Board Quick Start Guide3.1 Getting StartedThe codec board is supplied with a right angle, 10 way connector that can be used to connect it to the main developers kit. If required, this should be soldered to the main board. Alternatively other connectors or ribbon cables can be used.3.2 Equipment Required (not supplied)•Headsets (with microphone) (Standard PC headsets are fine)•EZURiO Wireless Developers Kit•BISM II Bluetooth module (Firmware release V9_20_22 onwards supports audio volume control)Normally two sets of development kit are required to test both ends of an audio link. If an application is being developed with an existing endpoint, such as a mobile phone or headset, only one set may be needed.3.3 Motherboard Jumper SettingsBefore using the codec board, there is a jumper setting on the motherboard that needs to be checked. This is CB1, next to the USB adaptor, which must be removed. If fitted it will short out the PCM output from the codec and prevent it operating. CB1 is only relevant for the WLAN 802.11 data module.3.4 Procedure:1)Plug the BISM II into the socket on the Dev Kit, connect to a PC serial port and power up.See the dev kit manual for different power supply options.2)Check that AT commands are working using EZURiO terminal. (Refer to blu2i Quick StartGuide if needed)3)Run the “ATI3” command to find out the firmware release number. If it is less thanV9_20_22, contact EZURiO to get a firmware upgrade for the BISM II. (Note: older versions of firmware will work, but audio output will be at half the full volume and the ats589=7 command will not be recognised)4)Power down, plug the codec board into the dev kit and power up. Check that ATcommands are working.Configure the Slave unit as follows:AT&F* Restore system defaultsATZ Reset the unit= 4 Makeconnectable and discoverableATS512ATS0=1 Answer after 1 ringATS531=1 Keep AT command mode going after a connection isestablishedATS589=7 Set Max. Volume level (requires firmware V9_20_22)AT&W Save the above settingsATZ Reset the unit.5) Find out the Bluetooth address of the Slave Unit by typing ATI4<return>6) Configure the Master Unit as follows:AT&F* Restore System DefaultsATZ Reset the unitATS531= 1 Keep the AT commands going after a connection isestablishedATS589=7 Set volume to maximumAT&W Save to flashATZ Reset the unit.ATD008098nnnnnn Connect to the slave (substitute your slave’s Bluetoothaddress that you found in step 5 for nnnnnn)AT+BTA1 Establish an audio link – displays AUDIO ON on both sides.(Alternatively AT+BTA7 can be used and the units willnegotiate the best link type.)An Audio link is now established between the two units.AT=BTA0 will turn off the audio link (but still leave the units connected).To change volume use ATS589. ATS589=0 gives minimum, ATS589=7 gives maximum. 4.Bluetooth SCO Links – A Primer4.1 Normal SCOBluetooth uses a Synchronous Connection-Orientated link (SCO) for audio. All this means is that for an audio link, the bandwidth needed to maintain the data rates required by the audio link is pre-allocated between the master and slave. This ensures audio data is always transmitted at the required data rate, and takes priority over the transmission of digital data.The Bluetooth specification for SCO is such that there is no re-transmission if data is corrupted or lost. This explains the crackling and popping that occurs when you get to the limits of radio range.The actual data rate over the air is 64 kbits/sec. There are 1600 timeslots available per second and when a master transmits a SCO packet in one timeslot, the slave replies with its SCO packet in the next. The SCO packet size is fixed at 240 bits (30 bytes). This means when a SCO link is established using the HV3 packet type, two out of every 6 timeslots are used up by the SCO link. This means there is enough bandwidth to have up to three SCO links active between a master and slave at the same time. In this scenario, there are no spare timeslots for other data.There are 3 main types of SCO packets, HV1, HV2 and HV3 (High Quality Voice). As mentioned earlier, the HV3 packet type has a 1 to 1 mapping between incoming audio data and the data transmitted over the air. There is no error correction possible with HV3.With HV1, each bit is transmitted 3 times and a simple voting algorithm is used at the other end to correct for any bit errors. This means that only 10 bytes of actual audio data can be transmitted in a SCO packet. To maintain the 64 kbits/sec data rate, all 6 timeslots have to be used for the SCO link, leaving no bandwidth available for data.With HV2, an FEC algorithm is used to correct for 1 bit errors. This increases the data packet size by 50%. This means that only 20 bytes of actual audio data can be transmitted in a SCO packet. To maintain the 64 kbits/sec data rate, 4 out of every 6 timeslots are used for the SCO link.AT+BTA1 enables HV3AT+BTA2 enables HV2AT+BTA4 enables HV1AT+BTA7 allows the link manager to negotiate which packet type to use, the default is HV14.2 Enhanced SCOEnhanced SCO or eSCO was implemented as part of the 1.2 Bluetooth Core Specification Release. The main driving factor was to improve audio quality. This has been achieved by: 1)including a CRC as part of the audio data packet to allow error detection and a re-transmission request. 2)allowing higher data rates by using packets that span more than 1 timeslot 3) allowing asymmetric links to allow high quality audio to be streamed in one direction.eSCO offers significantly better audio quality, but has to be configured at both ends of the link before a unit is enabled to accept incoming connections or enquiries.To try out eSCO, add the ATS584=1 command to the commands listed in the quick start section immediately after the AT&F* and ATZ commands.Both ends of the link must be configured for eSCO for the audio link to be established. If one end is set to eSCO and the other to SCO, you will get an “AUDIO FAIL” when the AT+BTA1 command is issued.The following are the packet types associated with the AT+BTA commands for eSCO.AT+BTA1 – EV3 packet. Up to 30 bytes + CRC. Uses up 1 timeslotAT+BTA2 – EV4 packet. Up to 120 bytes + CRC + 2/3 FEC. Up to 3 timeslotsAT+BTA4 – EV5 packet. Up to 180 bytes + CRC. Up to 3 timeslots. Currently Unsupported4.3 SCO / eSCO Transport DelaysThe following delays have been measured between incoming audio and audio output at the other end of a Bluetooth link.Normal SCO: AT+BTA1 7.84 ms AT+BTA2 9.24 ms AT+BTA4 10.8 msEnhanced SCO AT+BTA1 12.1 ms AT+BTA2 33.4 ms AT+BTA4 41.2 msAs can be seen, the additional error correction of eSCO comes with a transport delay penalty. This is because a buffer is needed to ensure that there is still data to output while waiting for a corrupted data packet to be re-transmitted.For AT+BTA1 and normal SCO, the data is transmitted once every 6 timeslots so the transport delay is expected to be 6/1600 = 3.75ms. When doing loop-round testing with the codec, i.e. with no transport delay, it was found that from input to output, the codec added ~1ms of delay at 1kHz and 1.5ms at lower frequencies.4.4 PCM TimingThe codec samples at 8 kHz. The default mode of operation of the codec is 16 bit Receive Gain Adjust Mode. In this mode, in every 8 kHz cycle, 16 bits of data is clocked into the codec. The first 13 bits are PCM audio data, the last 3 bits are volume data. Of the last three bits, 000 equates to maximum volume (ATS589=7), 111 equates to minimum volume (Ats589=0).At maximum volume, the output signal matches the amplitude of the input signal at the other end of the Bluetooth link. It is more appropriate to think of this feature as being an attenuation control.The clock rate used for sampling is 250kHz (4µs). 16 clock cycles takes 64µs. 8kHz equates to 125µs.The same timing is used for all packet types in both SCO and eSCO modes.5.Frequency Response5.1 Codec Frequency ResponseThe codec frequency response can be measured by connecting PCM_IN from the codec to PCM_OUT to the codec (PCM_OUT from J1, the 10 way connector has to be disconnected). A 1kΩ pull down resistor is needed on PCM_OUT to ensure maximum volume setting.The following graph shows the measured frequency response. For this test, R32, the side-tone resistor was removed to prevent audio feedback.A 1V peak to peak sine wave was injected into the microphone circuit and its amplitude measured at TP5, A0, the input to the codec. The output from the codec was measured on TP6, PA0+.The chart below shows the codec frequency response with the High Pass Filter Enable (HB – Pin 16) pin set high and set low.As can be seen from the chart, the codec frequency response is flat between 300 and 3,300 Hz. With the high pass filter on, the 3dB points are at 150Hz and 3,600 Hz respectively. With the high pass filter off, the 3dB point goes down to approximately 15Hz.5.2 Bluetooth Link Frequency ResponseThe Codec 13bit linear data is coded within the Bluetooth chip using CVSD (Continuous Variable Slope Decode) encoding for transport over the Bluetooth link. CVSD is essentially a form of Adaptive Differential PCM (ADPCM) and is well suited for voice transmission. It is forgiving of individual bit corruption as each bit only implements an up or a down shift relative to the previous level (corruption of the MSB of a 13 bit sample would create a much larger error term than is possible with ADPCM). A draw back of ADPCM is that it cannot track large delta changes in signal quickly enough. For voice, this does not present a problem.The chart below shows the frequency response of the Bluetooth link at different levels of input sine wave.As can be seen, the frequency response can only be considered to be flat when the input voltage level is less than a 0.3V peak to peak sine wave.6.Circuit DescriptionThis section describes the individual parts of the circuit and give design information aboutthe components, to allow you to adapt the circuitry of the codec board for your own implementation.6.1 Audio AmplifierThe Winbond codec is capable of driving a 32Ω load directly if the gain of the output amplifier is reduced by a factor of 4. This is done by Setting R1 to 39kΩ.Of the stereo headsets tested, it was found that 32Ω was a common impedance for each earpiece. For a stereo headset where two speakers are being driven in parallel this would be equivalent to driving a 16Ω load. This is out of the codec’s specification so a small headphone amplifier, U3, has been used on the evaluation board. This is not required if the impedance of the earpiece is equal or greater than 32Ω.The large 100 μF decoupling capacitors have been used so that the codec could be tested in its “high pass filter mode disabled” configuration. If you do not require a frequency response to go down below 300 Hz, then these capacitors can be reduced to small values. The main design consideration is the impedance should not be significant compared to the impedance of the headphone selected at frequencies of interest.E.g. if using a 32Ω headphone and expecting a 3dB point at 300 Hz, then the decoupling capacitor impedance could be 32Ω at 300Hz i.e. 10 μF. This requires a much smaller footprint than the 100μF used in the reference design.6.2 Driving the Headset Directly from the CodecThis will achieve the most cost effective design but care must be taken to ensure that the 32Ω specification of load is met by selecting an appropriate headset.Remove R10, R13 and R12. Fit R11, R9, R38 as zero ohm links. Fit 39kΩ in place of R1 to reduce the gain by 4.In-house testing showed that with a 32Ω load and with R1 set to 39kΩ, that there was some distortion at zero cross-over but that it was not easily perceptible.Even though the output signal level had been reduced by a factor of 4, on the headsets tested, the volume levels sounded loud enough for most applications. It is important to check this with the target headset for your application.6.3 Microphone CircuitThe microphone circuit is designed for an electret microphone (which is commonly used in PC applications). Typically this would be powered by 5V via a 2.2kΩ series resistor. In the reference design, it is powered by 3.3V to ensure a clean supply regardless of the power supply used to power the Dev kit. This reduces the sensitivity of the microphone - you should test your application with the microphone and voltage you intend to use in order to determine your component values.The gain of the microphone is set by R22 and R24, with gain being equal to R22/R24. The current values are 62K and 3.9K, giving a gain of approximately 16. When changing to a different gain, R27 and R25 should be set to the new values as well. This ensures that the load seen by common mode noise on the microphone is identical and prevents it from being amplified.R31 is a no fit resistor. It’s purpose is to facilitate test modes where a user wants to loop audio output directly back to the audio input to conduct an over the air audio test.6.4 SidetoneWhen we talk, we hear our own voice, which is part of normal speech perception. If our ears are covered by headphones, we do not hear our voice, which is perceived as abnormal. (Try covering your ears while talking to notice the difference).To compensate for the loss in feedback to the ear when it is covered with a headphone, most telephony systems inject some of the microphone signal back into the audio output path so that the person perceives their own speech as normal. This feature is commonly referred to as sidetone.Variable resistor VR2 allows you to control the amount of sidetone that is fed back to the audio output so that the user perceives their speech as normal.If the headset design does not totally cover the ear, then the sideband circuitry can be omitted.6.5 Power DownFor battery powered audio applications, the power down feature of the codec allows you to turn it off and save power when it is not being used. This feature can be tested by fitting R7 with a 0Ωlink and controlling the PUI input of the codec via MPIO_5.For AT commands, MPIO_5 translates to GPIO 7.The put GPIO 7 into output mode, use “ats610=$040”To turn the codec on, use “ats627=1”To turn the codec off, use “ats627=0”6.6 Alternative PCM_CLKSome applications require that the PCM Clock is driven by external circuitry. This requires the PCM Interface provided by the BISM to be put in Slave mode and a clock is supplied by the external circuitry on MPIO_7.Contact Ezurio for further details if this is a requirement.6.7 SwitchesThe switches S1, S2 and S3 have no defined function. They are there to assist you to prototype your audio application. e.g. If your application requires a button to be pressed for the user to answer an incoming connection, you can prototype that function using one of the switches provided.ATS620 allows you to read the status of the GPIO ports.No switches pressed: ATS620? => $0028S1 pressed (GPIO 9) ATS620? => $0128S2 pressed (GPIO 7) ATS620? => $0068S3 pressed (GPIO 8) ATS620? => $00A86.8 High Pass Filter EnableThe W681360 can have its High Pass filter enabled or disabled, depending on the state of the HB pin (Pin 16). This is pulled high or low by R3 or R4 (Default). See section 5.1 for more details.6.9 GPIO to MPIO MappingAT commands use GPIO numbers to represent I/O lines. These GPIO numbers map to physical signals drawn on the schematics as MPIO lines. Some of the GPIO/MPIO lines are used when providing a full RS232 interface.The following tables gives the mapping between GPIO, MPIO and RS232 signals.DCD MPIO_3RI MPIO_2DTR MPIO_9DSR MPIO_8GPIO_1 MPIO_0GPIO_2 MPIO_1GPIO_3 MPIO_9GPIO_4 MPIO_10GPIO_5 MPIO_11GPIO_6 MPIO_4GPIO_7 MPIO_5GPIO_8 MPIO_6GPIO_9 MPIO_7Note: For the BISM PA (Class 1 design), MPIO_0 and MPIO_1 are used to control the RF switch so are not available to the AT Command Set.7. Bill of MaterialsNot all components are fitted, as some provide alternative functionality or implement non-standard options.Refer to the previous sections and the schematic for information on the component function. Components marked in blue are not fitted.Reference Part ToleranceDescription Manufacture r Part No / FootprintC1,C7100nF20%Ceramic Capacitor0805 C2,C3,C6 10uF '+80/-20% Tantalum Capacitor TANA C4,C5,C810nF20%Ceramic Capacitor0805C9,C10 100uF 20% Electrolytic Capacitor Panasonic EEE0JA101SP C11,C12,C17,C18 2.2uF '+80/-20% Ceramic Capacitor 0805 C13 22uF '+80/-20% Ceramic Capacitor 1210 C14 100nF '+80/-20% Ceramic Capacitor 0805 C15,C19 100pF 20% Ceramic Capacitor 0805 C161.0uF'+80/-20%Ceramic Capacitor0805D1,D2,D3,D4,D5,D6,D7,D8 BAT54S Dual Schottky Diode BAT54S Zetex BAT54S J1 10 Way 0.1" R/A PCB Socket Harwin M20-7891046 J2,J3 3.5mm 3way Audio Jack Skt Schurter 4832.232L110uHThin Film Inductor1210 R1,R2,R5,R35,R36,R37 10K 1% Thick Film Resistor 0805 R3,R7,R8,R9,R11,R34,R38 0R Not Fitted 5% Thick Film Resistor 0805 R4,R6,R10,R12,R13,R330R5%Thick Film Resistor0805 R14,R28,R29,R30 1K 5% Thick Film Resistor 0805 R152K2 Not Fitted 5% Thick Film Resistor 0805 R16,R17,R18,R19,R24,R25 3.9K 1% Thick Film Resistor 0805 R26,R20 1.5K 5% Thick Film Resistor 0805 R23,R21 200K 5% Thick Film Resistor 0805 R27,R22 62K1% Thick Film Resistor 0805 R31 62K Not Fitted 1% Thick Film Resistor 0805 R32 75K5% Thick Film Resistor0805 S1,S2,S3OMRON/B3S-1000Push Button Switch SPNO SMD Omron B3S-1000U1 AME8800AEFT 3.3V Low Drop Out Regulator300mA AME AME8800AEFT U2 W681360RG W681360RG CODEC Winbond W681360RG U3 LM4908MM Dual Headphone Amplifier Nat. Semi. LM4909MMVR1 20K Not Fitted 20% 20K Trimmer Vishay TS53YL 20K 20% TR VR250K20%50K TrimmerVishayTS53YL 50K 20% TR8. References1. Winbond W681360 Data Sheet – /PDF/Sheet/W681360.pdf2. ACC-005 Schematic – ERBLU49-002A1-029.DisclaimersEZURIO’S WIRELESS PRODUCTS ARE NOT AUTHORISED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE MANAGING DIRECTOR OF EZURIO LTD.The definitions used herein are:a) Life support devices or systems are devices which (1) are intended for surgical implant into the body, or (2) support or sustain life and whose failure to perform when properly used in accordance with the instructions for use provided in the labelling can reasonably be expected to result in a significant injury to the user.b) A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.EZURiO does not assume responsibility for use of any of the circuitry described, no circuit patent licenses are implied and EZURiO reserves the right at any time to change without notice said circuitry and specifications.9.1 Data Sheet StatusThis data sheet contains preliminary data for use with Engineering Samples. Supplementary data will be published at a later date. EZURiO Ltd reserve the right to change the specification without prior notice in order to improve the design and supply the best possible product.Please check with EZURiO Ltd for the most recent data before initiating orcompleting a design. Designers should check the production status of any engineering firmware used during development before it is deployed.。
ws2812b手册解析笔记
ws2812b手册解析笔记（原创版）目录1.WS2812B 简介2.WS2812B 主要特性3.WS2812B 的工作原理4.WS2812B 的应用领域5.WS2812B 手册解析总结正文1.WS2812B 简介WS2812B 是一款功能强大的 LED 驱动器，具有 28 个输出通道，可实现高精度的 LED 亮度控制。
它采用恒流驱动方式，能够确保每个 LED 通道的电流恒定，从而实现 LED 的均匀发光。
此外，WS2812B 还具有调光速度较快、输出电压范围宽、抗干扰能力强等优点，使其在各种应用场景中都能发挥出色性能。
2.WS2812B 主要特性（1）28 个输出通道：WS2812B 具有 28 个独立的输出通道，可驱动多个 LED 灯珠，适用于各种照明设备。
（2）恒流驱动：WS2812B 采用恒流驱动方式，能确保每个通道的电流恒定，使 LED 灯珠亮度一致，实现均匀照明。
（3）宽电压范围：WS2812B 的工作电压范围为 3.0V-5.5V，适用于不同电压环境的应用。
（4）高速调光：WS2812B 具有较快的调光速度，能够实现高速亮度调节，满足动态照明需求。
（5）抗干扰能力强：WS2812B 具有较强的抗电磁干扰和抗静电干扰能力，确保设备在恶劣环境下仍能正常工作。
3.WS2812B 的工作原理WS2812B 的工作原理主要基于恒流驱动。
当外部电源接入 WS2812B 后，内部的电源管理模块会将电压转换为稳定的供电电压，然后通过 28 个恒流驱动器分别驱动每个输出通道的 LED 灯珠。
恒流驱动器能够根据外部信号调节 LED 的电流，从而实现 LED 亮度的无级调节。
4.WS2812B 的应用领域WS2812B 广泛应用于各种照明设备，如 LED 灯带、LED 灯泡、LED 面板灯等，以及各种景观照明、室内照明、商业照明等领域。
其出色的性能和稳定性，使得 WS2812B 成为众多 LED 照明产品的首选驱动器。
BP2812规格书(最新版)
非隔离降压型LED 恒流控制器晶丰明源半导体概述BP2812是一款高精度的LED 恒流控制芯片，应用于非隔离的降压型LED 电源系统，适合全范围的交流电压输入或者12V ~600V 的直流电压输入。
BP2812内部集成600V 功率MOSFET ，只需要很少⏹ 临界模式工作，无需电感补偿 ⏹ 内置600V 功率MOSFET⏹ 源极驱动，无需辅助绕组供电 ⏹ 高达±3%的LED 电流精度 图1 典型应用图晶丰明源半导体非隔离降压型LED恒流控制器定购信息晶丰明源半导体非隔离降压型LED恒流控制器极限参数(注1)注1注2：JA 注3：晶丰明源半导体非隔离降压型LED恒流控制器电气参数(注4, 5) （无特别说明情况下，V CC =12 V, T A =25℃）注4：典型参数值为25˚C下测得的参数标准。
注5：规格书的最小、最大规范范围由测试保证，典型值由设计、测试或统计分析保证。
晶丰明源半导体非隔离降压型LED恒流控制器典型参数特性启动电流对温度的变化启动电压对温度的变化欠压保护门限对温度的变化 V CC箝位电压对温度的变化晶丰明源半导体非隔离降压型LED恒流控制器电流检测门限对温度的变化线性调整率负载调整率输出电流对电感量的变化非隔离降压型LED 恒流控制器晶丰明源半导体图3 BP2812内部框图非隔离降压型LED 恒流控制器晶丰明源半导体应用信息BP2812是一款专为LED 照明设计的恒流驱动芯片，应用于非隔离的降压型LED 电源系统。
BP2812内部集成600V 功率MOSFET ，并且采用专利的恒流控制方法和源极驱动技术，只需要很少的外围元件就可以达到优异的恒流特性，系统成本低，效率高。
启动系统上电后，启动电阻对压达到芯片开启阈值时，内置12.5V 稳压管，V CC 恒流控制，输出LED BP2812的外围元件，压进行比较，当CS 功率管关断。
CS 的前沿消隐时间。
R 400I CSPK =其中，R CS BP2812内置线电压补偿功能，通过检测启动电阻上的电流对线电压的变化做补偿，实现优异的线性调整率。
XFS5152CE语音合成芯片用户开发指南V1.2
© Hefei iFly Digital TeXFS5152CE 语音合成芯片用户开发指南
目
录
1 概述 ...................................................................................................................................................... - 1 -
7 芯片控制方式 ...................................................................................................................................... - 9 -
7.1 控制命令...................................................................................................................................... - 9 7.2 芯片回传...................................................................................................................................... - 9 -
6.2 I2C 通讯模式............................................................................................................................... - 6 6.2.1 硬件连接 ............................................................................................................................. - 6 6.2.2 通讯传输字节格式.............................................................................................................. - 7 -
WS2812B灯条规格书
一米60灯60段单点控制WS2812幻彩灯条●产品名称●60灯WS2812全彩灯条宝贝说明1、产品型号：WS2812幻彩灯条一米60灯60段;2、光源：SMD 5050 LED;3、板材：FPCB;4、芯片：台湾晶元芯片，及台湾其它芯片;5、IC型号：WS2811，(1米60颗IC，1个IC控制1颗LED灯）;6、灰度等级：256级，（1米60个像素点）;7、LED数量：60灯/米，每1个灯为一组，可以剪切;8、发光角度：180°;9、发光颜色:可以通过控制器调为，白，红，黄，蓝，绿,等;10、标准工作电压: DC 5V;11、功率: 18W ±10% / 米;12、防水等级：不防水、滴胶（IP65）、套管（IP67），套管实心灌胶（IP68）等；13、FPCB板的尺寸: 宽度:10 mm, 厚度: 3mm;14、FPCB颜色：白色，黄色，黑色(除白色外需要定做);15、包装方式: 5 m / 卷, 灯条后面背3M胶，静电袋封装;16、重量: 0.15g /卷;17、装箱：50卷/箱箱体尺寸：450*330*310(mm)、重量：8.5KG；18、我司可提供配套幻彩控制器和电源主要特点1、控制原理：一个IC控制一颗LED组成一个回路(一组)，控制器通过控制IC对FPCB里面的电路进行控制，从而控制LED灯条变化不同的效果；如闪烁，追逐，跳变，顺时针跑马，逆时针跑马，单色跑马，变色跑马，单颗追逐从头到尾，流水，模拟闪电等；此款灯条的变化效果不限于目前控制器内置的94种效果，可以根据客户需要，自行编写；排成屏的形式可以显示，文字，字母，图片，动画，等等。
2、环保安全：采用优质高亮SMD 5050 LED。
具有耗电小、产生热量小、无眩光，耐冲击等特点。
低电压直流5V，12伏供电，安全可靠性高。
3、色彩丰富多样可根据客户需要通过控制器任意调节。
4、寿命长：平均寿命达5万小时。
5、裁剪、焊接方便自由：每一组LED即可组成一个回路，可以沿着上面切线任意截断和焊接达到客户要求的各种灯条长度的需求。
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深圳市阶新科技有限公司
XT1511
智能外控集成 LED 光源
产品概述:
XT1511是一个集控制电路与发光电路于一体的智能外控LED光源。
其外型与一个5050LED灯珠相同，每个元件即为一个像素点。
像素点内部包含了智能数字接口数据锁存信号整形放大驱动电路，电源稳压电路，内置恒流电路，高精度RC振荡器，输出驱动采用专利PWM技术，有效保证了像素点内光的颜色高一致性。
数据协议采用单极性归零码的通讯方式，像素点在上电复位以后，DIN端接受从控制器传输过来的数据，首先送过来的24bit数据被第一个像素点提取后，送到像素点内部的数据锁存器，剩余的数据经过内部整形处理电路整形放大后通过DO端口开始转发输出给下一个级联的像素点，每经过一个像素点的传输，信号减少24bit。
像素点采用自动整形转发技术，使得该像素点的级联个数不受信号传送的限制，仅仅受限信号传输速度要求。
LED具有低电压驱动，环保节能，亮度高，散射角度大，一致性好，超低功率，超长寿命等优点。
将控制电路集成于LED上面，电路变得更加简单，体积小，安装更加简便。
主要应用领域:
● LED全彩发光字灯串,LED全彩模组,LED幻彩软硬灯条,LED护栏管，LED外观/情景照明
● LED点光源,LED像素屏,LED异形屏,各种电子产品,电器设备跑马灯。
特性说明:
● Top SMD内部集成高质量外控单线串行级联恒流IC；
●控制电路与RGB芯片集成在SMD 5050元器件中，构成一个完整的外控像素点,混色效果均匀且一致性高。
●内置数据整形电路，任何一个像素点收到信号后经过波形整形再输出，保证线路波形畸变不会累加。
●内置上电复位和掉电复位电路，上电不亮灯；
●灰度调节电路（256级灰度可调），
●红光驱动特殊处理，配色更均衡，
●单线数据传输，可无限级联。
●整形转发强化技术，两点间传输距离超过10M.
●数据传输频率可达800Kbps，当刷新速率30帧/秒时，级联数不小于1024点。
●内置电源反接保护模块，电源反接不会损坏IC.
产品机械尺寸（单位mm）:
机械尺寸与引脚图（单位mm）:
引脚功能:
电气参数（极限参数，Ta=25℃,VSS=0V） :
动态参数（Ta=25℃）:
RGB芯片特性参数:
颜色波长(nm)发光强度(mcd)工作电压(v)红色（Red) 620-625 700-1000 2.0-2.2
绿色（Green) 522.5-525 1500-2200 3.0-3.3 蓝色（Blue) 467.5-470 700-1000 3.0-3.3
数据传输时间( TH+TL=1.25µs±600ns):
T0H 0码，高电平时间0.3µs±0.15µs T1H 1码，高电平时间0.6µs ±0.15µs T0L 0码，低电平时间0.9µs ±0.15µs T1L 1码，低电平时间0.6µs ±0.15µs Trst Reset码，低电平时间80µs
时序波形图:
输入码型： 连接方式：
数据传输方式:
注：其中D1为MCU 端发送的数据，D2、D3、D4为级联电路自动整形转发的数据。
24bit 数据结构： G7
G6
G5
G4
G3
G2
G1
G0
R7
R6
R5
R4
DIN DIN DIN DO
DO
DO
PIX1D1
D2
D3
D4
PIX2PIX3
R3R2R1R0B7B6B5B4B3B2B1B0注：高位先发，按照RGB的顺序发送数据(G7 → G6 → 0
典型应用电路：。