ST72321R7-Auto datasheet(175/243 Pages) STMICROELECTRONICS

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ST72321xx-Auto

10-bit A/D converter (ADC)

Doc ID 13829 Rev 1

175/243

17.6.2

Data register (ADCDRH)

5ADON

A/D Converter on

This bit is set and cleared by software.

0: Disable ADC and stop conversion

1: Enable ADC and start conversion

Reserved. Must be kept cleared

3:0

CH[3:0]

Channel Selection

These bits are set and cleared by software. They select the analog input to convert.

0000: Channel pin = AIN0

0001: Channel pin = AIN1

0010: Channel pin = AIN2

0011: Channel pin = AIN3

0100: Channel pin = AIN4

0101: Channel pin = AIN5

0110: Channel pin = AIN6

0111: Channel pin = AIN7

1000: Channel pin = AIN8

1001: Channel pin = AIN9

1010: Channel pin = AIN10

1011: Channel pin = AIN11

1100: Channel pin = AIN12

1101: Channel pin = AIN13

1110: Channel pin = AIN14

1111: Channel pin = AIN15

Note: The number of channels is device dependent. Refer to the device pinout

description.

Table 92.

ADCCSR register description (continued)

Bit

Name

Function

ADCDRH

Reset value: 0000 0000 (00h)

543

D[9:2]

Table 93.

ADCDRH register description

Bit

Name

Function

7:0

D[9:2]

MSB of Converted Analog Value

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