STMPE811_08 datasheet(26/54 Pages) STMICROELECTRONICS

Part #	STMPE811

Description	8-bit port expander with advanced touchscreen controller

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Analog-to-digital converter

STMPE811

26/54

ADC_CTRL1

ADC control 1

Address:

0x20

Type:

R/W

Reset:

0x9C

Description:

ADC control register

7

6

5

4

3

210

RESERVED

SAMPLE_TIME2 SAMPLE_TIME1 SAMPLE_TIME0

MOD_12B

RESERVED

REF_SEL

RESERVED

[7] RESERVED

[6:4] SAMPLE_TIMEn: ADC conversion time in number of clock

000: 36

001: 44

010: 56

011: 64

100: 80

101: 96

110: 124

111: Not valid

[3] MOD_12B: Selects 10 or 12-bit ADC operation

1: 12 bit ADC

0: 10 bit ADC

[2] RESERVED

[1] REF_SEL: Selects between internal or external reference for the ADC

1: External reference

0: Internal reference

[0] RESERVED

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STMPE811 Datasheet(PDF) 26 Page - STMicroelectronics

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