HD6433937 Datasheet, PDF (466/521 Pages) Hitachi Semiconductor – Hardware Manual

AMR—A/D mode register
Bit
Initial value
Read/Write
7
6
5
CKS TRGE —
0
0
1
R/W
R/W
—
H'C6
A/D converter
4
3
2
1
0
—
CH3 CH2 CH1 CH0
1
0
0
0
0
—
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
*
* ^{No channel selected}
0
1
0
0 AN ₀
0
1
0
1 AN ₁
0
1
1
0 AN ₂
0
1
1
1 AN ₃
1
0
0
0 AN ₄
1
0
0
1 AN ₅
1
0
1
0 AN ₆
1
0
1
1 AN ₇
1
1
*
* Reserved
External trigger select
* Don’t care
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
Clock select
Bit 7
CKS Conversion Period
0 62/ø
1 31/ø
Conversion Time
ø = 1 MHz ø = 5 MHz
62 µs
31 µs
12.4 µs
—*
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.
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