CT365 DATASHEET_V1.0

CT365

Mutual Touch Panel Controller

Data Sheet

Version 1.0

VTL Technology Co.,LTD.

Revision History

Version Content Date

Release 2011/10/18

1.0 First

Index

1 Features (4)

2 Description (4)

3 Block Diagram (5)

4 Pin Configuration (6)

5 Pad Description (8)

6 Oscillator (10)

7 SPI Interface (11)

8 I2C Interface (12)

9 Absolute Maximum Rating (13)

10 DC Elertrical Characteristics (13)

11 Application circuits (14)

1. Features

? System Operation voltage: 2.7V~3.6V

? VDDIO: from 1.65V~3.6V

? CMOS technology combine MCU, Serial Interface and ADC peripheral for low power

consumption application

? Support up to 71 capacitive sensing channels

? Build in a Micro-Processor (uP) core

- Update to 32K bytes program memory

- Standard 256 bytes internal data memory

- 36Kbytes data memory

? Serial Interface

- Either I2C Slave mode Interface or SPI Slave mode Interface for general purpose application. ? Fully programmable scan sequence

? Support detection Position, ID, Area and force of maximum 10 fingers

? Data update rate: Up to 10ms update rate for one finger operation

? Power management

- Normal operation mode

- Idle mode

- Serial interface mode

- Deep sleep mode

? Palm Rejection

? Water Proof

2. Description

The CT365 is a mutual type sensor IC provides up to 71 capacitive sensing channels. CT365 builds in an MCU which integrated with 32K bytes flash and 256 bytes internal RAM.

According to ADC raw counts, CT365 can determine finger on/off status and also transfer on/off status into XY position or any touch event.

CT365 builds in power management block and provides idle, serial interface and deep sleep mode to reduce IC power consumption. CT365 supports I2C and SPI serial interfaces.

3. Block Diagram

Figure 1. System Block Diagram

4. Pin Configuration 4.1. Package QFN 88

Figure 2. Package QFN88

4.2. Package outline dimension QFN88

5. Pad Description

Table 1. Pad Description

Designation I/O 功能说明AIN0 I/O Touch sensor I/O AIN1I/O Touch sensor I/O AIN2I/O Touch sensor I/O AIN3I/O Touch sensor I/O AIN4I/O Touch sensor I/O AIN5I/O Touch sensor I/O AIN6I/O Touch sensor I/O AIN7I/O Touch sensor I/O AIN8I/O Touch sensor I/O AIN9I/O Touch sensor I/O AIN10I/O Touch sensor I/O AIN11I/O Touch sensor I/O AIN12I/O Touch sensor I/O AIN13I/O Touch sensor I/O AIN14I/O Touch sensor I/O AIN15I/O Touch sensor I/O AIN16I/O Touch sensor I/O AIN17I/O Touch sensor I/O AIN18I/O Touch sensor I/O AIN19 I/O Touch sensor I/O AIN20 I/O Touch sensor I/O AIN21 I/O Touch sensor I/O AIN22 I/O Touch sensor I/O AIN23 I/O Touch sensor I/O AIN24 I/O Touch sensor I/O AIN25 I/O Touch sensor I/O AIN26 I/O Touch sensor I/O AIN27 I/O Touch sensor I/O AIN28 I/O Touch sensor I/O AIN29 I/O Touch sensor I/O AIN30 I/O Touch sensor I/O AIN31 I/O Touch sensor I/O AIN32 I/O Touch sensor I/O AIN33 I/O Touch sensor I/O AIN34 I/O Touch sensor I/O AIN35 I/O Touch sensor I/O AIN36 I/O Touch sensor I/O AIN37 I/O Touch sensor I/O AIN38 I/O Touch sensor I/O AIN39 I/O Touch sensor I/O AIN40 I/O Touch sensor I/O AIN41 I/O Touch sensor I/O AIN42 I/O Touch sensor I/O AIN43 I/O Touch sensor I/O AIN44 I/O Touch sensor I/O AIN45 I/O Touch sensor I/O AIN46 I/O Touch sensor I/O AIN47 I/O Touch sensor I/O AIN48 I/O Touch sensor I/O AIN49 I/O Touch sensor I/O AIN50 I/O Touch sensor I/O AIN51 I/O Touch sensor I/O AIN52 I/O Touch sensor I/O AIN53 I/O Touch sensor I/O AIN54 I/O Touch sensor I/O

AIN55 I/O Touch sensor I/O

AIN56 I/O Touch sensor I/O

AIN57 I/O Touch sensor I/O

AIN58 I/O Touch sensor I/O

AIN59 I/O Touch sensor I/O

AIN60 I/O Touch sensor I/O

AIN61 I/O Touch sensor I/O

AIN62 I/O Touch sensor I/O

AIN63 I/O Touch sensor I/O

AIN64 I/O Touch sensor I/O

AIN65 I/O Touch sensor I/O

AIN66 I/O Touch sensor I/O

AIN67 I/O Touch sensor I/O

AIN68 I/O Touch sensor I/O

AIN69 I/O Touch sensor I/O

AIN70 I/O Touch sensor I/O

GPIO and Serial Interface

SCK / P0.0 I/O Clock pad of I2C /SPI Slave mode serial interface

GPIO: P0.0

MOSI / P0.1I/O SPI: Slave mode data input

I2C: Slave mode SDA Pad

GPIO: P0.1

SS / P0.4I/O SPI, I2C request

GPIO: P0.4

TP_SYNC / P0.5I/O TP_SYNC or H_SYNC Input pad

GPIO: P0.5( default )

System Resource

RSTB I CT365 Global Reset input.

VCC C Core Power (1.8V)

VDD PI Main Power Input for Digital (2.7V~3.6V)

VDDIO PI GPIO logic level.(1.65V ~ 3.6V)

GND P Digital Ground

AGND P Analog Ground

DC/DC

C1P/C1M C Flying Capacitor 1 Pos/Neg Input

C2P/C2M C Flying Capacitor 1 Pos/Neg Input

C3P/C3M C Flying Capacitor 1 Pos/Neg Input

VINT1PO Output voltage of DC/DC stage1

VINT2PO Output voltage of DC/DC stage2

VINT3 PO Output voltage of DC/DC stage3

Legend: I: Input, O: Output, P: Power, D: Dummy, S: Shorted line, M: Mark, PI: Power input, PO: Power output,T: Testing, I/ O: Input / Output. PS: Power Setting, C: Capacitor pin.

6. Oscillator

The CT365 provides an internal RC ring counter for main clock source. Firmware programmer can onfigure OSC_DIV to select different clock resource for CT365 MCU and peripherals.

7. SPI Interface

8. I2C Interface

9. Absolute Maximum Rating

Logic supply voltage -0.3V to 3.6V

Storage temperature -50℃ to 100℃

Operating temperature -20℃ to 85℃

Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only. Functional operation of this device at these or under any other conditions above those indicated in the operational sections of this specification are not implied and exposure to absolute maximum rating conditions for extended periods may affect device reliability.

10. DC Electrical Characteristics (V DD=3.0V, GND=0V)

For the digital circuit

11. Application Circuit