
13. 12-bit ADC
A96G166/A96A166/A96S166 User’s manual
122
ADCCRL (A/D Converter Counter Low Register): 9CH
7
6
5
4
3
2
1
0
STBY
ADST
REFSEL
AFLAG
ADSEL3
ADSEL2
ADSEL1
ADSEL0
R/W
R/W
R/W
R
R/W
R/W
R/W
R/W
Initial value: 00H
STBY
Control Operation of A/D
(The ADC module is automatically disabled at stop mode)
0
ADC module disable
1
ADC module enable
ADST
Control A/D Conversion stop/start.
0
No effect
1
ADC Conversion Start and auto clear
REFSEL
A/D Converter Reference Selection
0
Internal Reference (VDD)
1
Reserved
AFLAG
A/D Converter Operation State (This bit is cleared to
‘0’ when the
STBY bit is set to
‘0’ or when the CPU is at STOP mode)
0
During A/D Conversion
1
A/D Conversion finished
ADSEL[3:0]
A/D Converter input selection
ADSEL3
ADSEL2
ADSEL1
ADSEL0
Description
0
0
0
0
AN0
0
0
0
1
AN1
0
0
1
0
AN2
0
0
1
1
AN3
0
1
0
0
AN4
0
1
0
1
AN5
0
1
1
0
AN6
0
1
1
1
AN7
1
0
0
0
AN8
1
0
0
1
AN9
1
0
1
0
AN10
1
0
1
1
AN11
1
1
0
0
AN12
1
1
0
1
AN13
1
1
1
0
AN14
1
1
1
1
VDC1.55