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ADCSR—A/D Control/Status Register
7
Bit
ADF
0
Initial value
R/(W)
Read/Write
A/D End Flag
0 [Clearing conditions]
• When 0 is written in the to ADF flag after reading ADF = 1
• When the DTC is activated by an ADI interrupt and ADDR is read
1 [Setting conditions]
• Single mode: When A/D conversion ends
• Scan mode: When A/D conversion ends on all specified channels
Note: * Only 0 can be written, to clear the flag.
1064
6
5
ADIE
ADST
0
0
*
R/W
R/W
Scan Mode
0 Single mode
1 Scan mode
A/D Start
0 A/D conversion stopped
1 • Single mode: A/D conversion is started. Cleared to 0 automatically
when conversion on the specified channel ends
• Scan mode: A/D conversion is started. Conversion continues
sequentially on the selected channels until ADST is cleared to
0 by software, a reset, or a transition to standby mode or module
stop mode
A/D Interrupt Enable
0 A/D conversion end interrupt (ADI) request disabled
1 A/D conversion end interrupt (ADI) request enabled
H'FF98
4
3
SCAN
CH3
0
0
R/W
R/W
Channel Select 2 to 0
CH3
CH2
CH1
0
0
0
1
1
0
1
1
0
0
1
Channel Select 3
0 AN8 to AN11 are group 0 analog input pins
1 AN0 to AN3 are group 0 analog input pins,
AN4 to AN7 are group 1 analog input pins
A/D Converter
2
1
CH2
CH1
0
0
R/W
R/W
CH0
Single Mode
(SCAN = 0)
0
AN0
1
AN1
0
AN2
1
AN3
0
AN4
1
AN5
0
AN6
1
AN7
0
AN8
1
AN9
0
AN10
1
AN11
0
CH0
0
R/W
Scan Mode
(SCAN = 1)
AN0
AN0, AN1
AN0 to AN2
AN0 to AN3
AN4
AN4, AN5
AN4 to AN6
AN4 to AN7
AN8
AN8, AN9
AN8 to AN10
AN8 to AN11
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