Hitachi H8/3937 Series Hardware Manual page 466

Table of Contents

Advertisement

AMR—A/D mode register
Bit
7
CKS
Initial value
0
Read/Write
R/W
Clock select
Bit 7
CKS
Note: * Operation is not guaranteed with a conversion time of less than 12.4 µs
Select a setting that gives a conversion time of at least 12.4 µs.
454
6
5
TRGE
0
1
R/W
Channel select
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
0
62/ø
1
31/ø
4
3
CH3
1
0
R/W
Bit 3
Bit 2
Bit 1
CH3
CH2
CH1
0
0
*
0
1
0
0
1
0
0
1
1
0
1
1
1
0
0
1
0
0
1
0
1
1
0
1
1
1
*
Conversion Time
ø = 1 MHz
ø = 5 MHz
62 µs
12.4 µs
31 µs
—*
H'C6
A/D converter
2
1
CH2
CH1
0
0
R/W
R/W
Bit 0
CH0
Analog Input Channel
No channel selected
*
0
AN
0
1
AN
1
0
AN
2
1
AN
3
0
AN
4
1
AN
5
0
AN
6
1
AN
7
*
Reserved
* Don't care
0
CH0
0
R/W

Advertisement

Table of Contents
loading

Table of Contents