AMR—A/D mode register
H'C6
A/D converter
Bit
Initial value
Read/Write
7
CKS
0
R/W
6
TRGE
0
R/W
4
—
1
—
3
CH3
0
R/W
0
CH0
0
R/W
2
CH2
0
R/W
1
CH1
0
R/W
Channel select
No channel selected
Bit 3
0
Bit 2
Analog Input Channel
*
: Don’t care
CH3
CH2
0
CH1
CH0
Bit 1
Bit 0
0
AN
1
1
0
1
1
0
0
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
5
—
1
—
4
AN
5
AN
6
AN
7
*
*
1
0
0
1
1
0
1
AN
0
AN
1
AN
2
AN
3
Clock select
62/ø
Bit 7
0
Conversion Period
CKS
31/ø
1
62
µ
s
ø = 1 MHz
31
µ
s
31
µ
s
ø = 2 MHz
15.5
µ
s
*
Conversion Time
Note:
*
Operation is not guaranteed with a conversion time of less than 15.5
µ
s
Select a setting that gives a conversion time of at least 15.5
µ
s.
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