Renesas H8 Series Hardware Manual page 629

AMR—A/D Mode Register
Bit 7
CKS
Initial value 0
Read/Write R/W
Clock Select
Bit 7
CKS
0
1
Notes: 1. Except for the H8/38124 Group, operation cannot be
6 5

TRGE
0 1

R/W
Channel Select
Bit 3
CH3
0
1
1
External Trigger Select
0 Disables start of A/D conversion by external trigger
1 Enables start of A/D conversion by rising or falling edge
of external trigger at pin ADTRG
Conversion Period
62/φ
31/φ
guaranteed if the conversion time is less than 12.4 µs.
Make sure to select a setting that gives a conversion time of
12.4 µs or more in such cases. For the H8/38124 Group select
a setting that gives a conversion time of 6.2 µs or more.
2. H8/38124 Group only.
Appendix B Internal I/O Registers
H'C6
4 3

CH3 CH2
1 0

R/W R/W
Bit 2 Bit 1 Bit 0
CH2 CH1 CH0
* *
0
1 0 0
1
1 0
1
0 0 0
1
1 0
1
* *
1
Conversion Time
φ = 1 MHz φ = 5 MHz
62 µs 12.4 µs
 *
31 µs
1
Rev. 7.00 Mar 10, 2005 page 587 of 652
A/D Converter
2 1 0
CH1 CH0
0 0 0
R/W R/W
Analog Input Channel
No channel selected
AN
0
AN
1
AN
2
AN
3
AN
4
AN
5
AN
6
AN
7
Do not specify this
combination
*: Don't care
φ = 10 MHz *
2
6.2 µs
 *
1
REJ09B0042-0700