
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
4 - 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)
76543210
D[9:2]
RO
Table 93. ADCDRH register description
Bit Name Function
7:0 D[9:2] MSB of Converted Analog Value
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