STMPE811_08 datasheet(25/54 Pages) STMICROELECTRONICS

Part #	STMPE811

Description	8-bit port expander with advanced touchscreen controller

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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STMPE811

Analog-to-digital converter

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9

Analog-to-digital converter

An 8-input,12-bit analog-to-digital converter (ADC) is integrated in the STMPE811. The ADC

can be used as a generic analog-to-digital converter, or as a touchscreen controller capable

of controlling a 4-wire resistive touchscreen.

AddINT_EN

Table 12.

ADC controller register summary table

Address

Register name

Size

Description

0x20

ADC_CTRL1

8

ADC control

0x21

ADC_CTRL2

8

ADC control

0x22

ADCCapture

8

To initiate ADC data acquisition

0x30

ADC_DATA_CH0

8

ADC channel 0 (IN3/GPIO-3)

0x32

ADC_DATA_CH1

8

ADC channel 1 (IN2/GPIO-2)

0x34

ADC_DATA_CH2

8

ADC channel 2 (IN1/GPIO-1)

0x36

ADC_DATA_CH3

8

ADC channel 3 (IN0-GPIO-0)

0x38

ADC_DATA_CH4

8

ADC channel 4 (TSC)

0x3A

ADC_DATA_CH5

8

ADC channel 5 (TSC)

0x3C

ADC_DATA_CH6

8

ADC channel 6 (TSC)

0x3E

ADC_DATA_CH7

8

ADC channel 7 (TSC)

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STMPE811 Datasheet(PDF) 25 Page - STMicroelectronics

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