STMPE811 datasheet(25/54 Pages) STMICROELECTRONICS

部件名	STMPE811

功能描述	8-bit port expander with advanced touchscreen controller

PDF	54 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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25 / 54 page

STMPE811

Analog-to-digital converter

25/54

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

Size

Description

0x20

ADC_CTRL1

ADC control

0x21

ADC_CTRL2

ADC control

0x22

ADCCapture

To initiate ADC data acquisition

0x30

ADC_DATA_CH0

ADC channel 0 (IN3/GPIO-3)

0x32

ADC_DATA_CH1

ADC channel 1 (IN2/GPIO-2)

0x34

ADC_DATA_CH2

ADC channel 2 (IN1/GPIO-1)

0x36

ADC_DATA_CH3

ADC channel 3 (IN0-GPIO-0)

0x38

ADC_DATA_CH4

ADC channel 4 (TSC)

0x3A

ADC_DATA_CH5

ADC channel 5 (TSC)

0x3C

ADC_DATA_CH6

ADC channel 6 (TSC)

0x3E

ADC_DATA_CH7

ADC channel 7 (TSC)

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