Rev. 5.00, 12/03, page 522 of 1088
14.2.2
A/D Control/Status Register (ADCSR)
Bit
:
7
6
5
4
3
2
1
0
ADF
ADIE
ADST
SCAN
CKS
CH2
CH1
CH0
Initial value :
0
0
0
0
0
0
0
0
R/W
:
R/(W)
*
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note:
*
Only 0 can be written to bit 7, to clear this flag.
ADCSR is an 8-bit readable/writable register that controls A/D conversion operations and shows
the status of the operation.
ADCSR is initialized to H'00 by a reset, and in standby mode or module stop mode.
Bit 7—A/D End Flag (ADF): Status flag that indicates the end of A/D conversion.
Bit 7
ADF
Description
0
[Clearing conditions]
(Initial value)
•
When 0 is written to the 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
Bit 6—A/D Interrupt Enable (ADIE): Selects enabling or disabling of interrupt (ADI) requests
at the end of A/D conversion.
Bit 6
ADIE
Description
0
A/D conversion end interrupt (ADI) request disabled
(Initial value)
1
A/D conversion end interrupt (ADI) request enabled
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