STMPE16M31 datasheet(2/85 Pages) STMICROELECTRONICS

Part #	STMPE16M31

Description	S-Touch짰 16/24-channel touchkey controller with PWM and ratio engines

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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2 / 85 page

Contents

STMPE16M31, STMPE24M31

2/85

Doc ID 16174 Rev 4

Contents

1

Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1

Power scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.2

Power states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2I2C interface module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1

Device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3

Read operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4

Write operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.1

Write operations for one or more bytes . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5

General call address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6

Register map and function description . . . . . . . . . . . . . . . . . . . . . . . . . 18

7

System controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7.1

Interrupt system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

8

Interrupt service routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9

GPIO controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

10

PWM array controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

11

PWM controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

11.1

PWM function register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

12

Basic PWM programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

12.1

Interrupt on basic PWM controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

13

Touch sensor controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

13.1

Sampling rate calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

13.2

Sensor resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Obsolete

Product(s)

- Obsolete

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