HD64F3028F25 Datasheet, PDF (866/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

ADCSR—A/D Control/Status Register
H'FFFE8
A/D
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
Group Channel
Selection Selection
CH2
0
1
CH1 CH0
00
1
10
1
00
1
10
1
Description
Single Mode
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Scan Mode
AN0
AN0, AN1
AN0 to AN2
AN0 to AN3
AN4
AN4, AN5
AN4 to AN6
AN4 to AN7
Clock select
0 ^{Conversion time =}
134 states (maximum)
1 ^{Conversion time =}
70 states (maximum)
Scan mode
0 Single mode
1 Scan mode
A/D start
0 A/D conversion is stopped
A/D conversion is stopped
1 Single mode: A/D conversion starts; ADST is automatically cleared to 0
when conversion ends
Scan mode: A/D conversion starts and continues, cycling among the
selected channels ADST is cleared to 0 by software,
by a reset, or by a transition to standby mode
A/D interrupt enable
0 A/D end interrupt request is disabled
1 A/D end interrupt request is enabled
A/D end flag
0 ^{[Clearing conditions]}
• Read ADF when ADF = 1, then write 0 in ADF
• The DMAC is activated by an ADI interrupt
1 _{[Setting conditions]}
• Single mode: A/D conversion ends
• Scan mode: A/D conversion ends in all selected channels
Note: * Only 0 can be written, to clear the flag.
Rev. 2.00, 09/03, page 834 of 890