AMR—A/D mode register
H'C6
A/D converter
Bit
7
6
TRGE
0
5
—
1
4
—
1
3
2
1
0
CKS
0
CH3
0
CH2
0
CH1
0
CH0
0
Initial value
Read/Write
R/W
R/W
—
—
R/W
R/W
R/W
R/W
Channel select
Bit 3 Bit 2 Bit 1 Bit 0
CH3 CH2 CH1 CH0 Analog Input Channel
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
1
1
1
0
0
0
0
1
1
1
1
No channel selected
*
0
0
1
*
0
1
0
1
0
1
0
1
0
1
0
1
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11
1
0
0
1
1
0
0
1
1
* Don’t care
External trigger select
0
1
Disables start of A/D conversion by external trigger
Enables start of A/D conversion by rising or falling edge
of external trigger at pin ADTRG
Clock select
Bit 7
Conversion Time
CKS Conversion Period ø = 1 MHz ø = 2 MHz
0
1
62/ø
31/ø
62 µs
31 µs
31 µs
15.5 µs*
Note:
Operation is not guaranteed with a conversion time of less than 15.5 µs
Select a setting that gives a conversion time of at least 15.5 µs.
*
449
ETC [ ETC ]
