HD64F3028F25 Datasheet, PDF (576/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

15.2.2 A/D Control/Status Register (ADCSR)
Bit
Initial value
Read/Write
7
ADF
0
R/(W)*
6
ADIE
0
R/W
5
ADST
0
R/W
4
SCAN
0
R/W
3
CKS
0
R/W
2
CH2
0
R/W
1
CH1
0
R/W
0
CH0
0
R/W
Channel select 2 to 0
These bits select analog
input channels
Clock select
Selects the A/D conversion time
Scan mode
Selects single mode or scan mode
A/D start
Starts or stops A/D conversion
A/D interrupt enable
Enables and disables A/D end interrupts
A/D end flag
Indicates end of A/D conversion
Note: * Only 0 can be written, to clear the flag.
ADCSR is an 8-bit readable/writable register that selects the mode and controls the A/D converter.
ADCSR is initialized to H'00 by a reset and in standby mode.
Bit 7—A/D End Flag (ADF): Indicates the end of A/D conversion.
Bit 7
ADF
0
1
Description
[Clearing conditions]
• Read ADF when ADF =1, then write 0 in ADF.
• DMAC activated by ADI interrupt.
[Setting conditions]
• Single mode: A/D conversion ends
• Scan mode: A/D conversion ends in all selected channels
(Initial value)
Rev. 2.00, 09/03, page 544 of 890