STMPE811_08 datasheet(6/54 Pages) STMICROELECTRONICS

Part #	STMPE811

Description	8-bit port expander with advanced touchscreen controller

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Pin configuration and functions

STMPE811

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2.1

Pin functions

The STMPE811 is designed to provide maximum features and flexibility in a very small pin-

count package. Most of the pins are multi-functional. The following table shows how to

select the pin’s function.

Table 3.

Pin configuration

GPIO alternate function register

01

ADC control 1 bit 1 (RefSel)

01

IN0

GPIO-0

ADC

IN1

GPIO-1

ADC

IN2

GPIO-2

ADC

External reference +

IN3

GPIO-3

ADC

External reference -

TSC control 1 bit 0 (EN)

01

X+

GPIO-4

ADC

TSC X+

Y+

GPIO-5

ADC

TSC Y+

X-

GPIO-6

ADC

TSC X-

Y-

GPIO-7

ADC

TSC Y-

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STMPE811 Datasheet(PDF) 6 Page - STMicroelectronics

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