HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 456

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

AMR—A/D mode register
452
Bit
Initial value
Read/Write
Notes:
*
1.
Don’t care
Operation is not guaranteed if the conversion time is less than 12.4 s.
Set bit 7 for a value of at least 12.4 s.
Clock select
CKS
R/W
Bit 7
CKS
7
0
0
1
Conversion Period
62/ø
31/ø
TRGE
External trigger select
R/W
0 Disables start of A/D conversion by external trigger
1 Enables start of A/D conversion by rising or falling edge
6
0
of external trigger at pin ADTRG
—
—
5
1
Channel select
Bit 3
CH3
0
1
ø = 2 MHz
31 s
15.5 s
—
—
4
1
Bit 2
CH2
Conversion Time
0
1
0
1
Bit 1
CH1
CH3
R/W
0
1
0
1
0
0
1
1
*
3
0
ø = 5 MHz
12.4 s
—
*
1
H'FFC4
Bit 0
CH0
0
1
0
1
0
1
0
1
0
1
0
1
*
CH2
R/W
2
0
Analog Input Channel
No channel selected
AN
AN
AN
AN
AN
AN
AN
AN
Reserved
Reserved
Reserved
Reserved
0
1
2
3
4
5
6
7
CH1
R/W
1
0
A/D converter
CH0
R/W
0
0