STMPE821_09 datasheet(6/55 Pages) STMICROELECTRONICS

Part #	STMPE821

Description	8-channel capacitive touch key controller

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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STMPE821 functional overview

STMPE821

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1.2

Pin assignment and function

Figure 2.

STMPE821 pin assignment (top view)

Table 2.

Pin assignments and function

Pin number

Pin name

Description

1

GPIO_2/Touch_2

GPIO 2

2

GPIO_1/Touch_1

GPIO 1

3

GPIO_0/Touch_0

GPIO 0

4

ARef

Reference capacitor for touch sensor

5RST

RESET (active low).

Pull to VCC for normal operation, pull to GND to reset.

6SDA

I2C data

7SCL

I2C clock

8

INT

INT output (open drain)

9GND

GND

10

VCC

Supply voltage for I2C block

11

VIO

Supply voltage for GPIO and internal regulator

12

GPIO_7/Touch_7

GPIO 7

13

GPIO_6/Touch_6

GPIO 6

14

GPIO_5/Touch_5

GPIO 5

15

GPIO_4/Touch_4

GPIO 4

16

GPIO_3/Touch_3

GPIO 3

CS00045

16

15

14

13

5

6

7

8

12

3

4

12

11

10

9

STMPE821

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STMPE821 Datasheet(PDF) 6 Page - STMicroelectronics

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