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H'D134: A/D Control Register ADCR: A/D Converter
7
Bit
:
CK
0
Initial value :
R/W
R/W
:
Clock select
0 Conversion frequency = 266 states
1 Conversion frequency = 134 states
Rev. 1.0, 02/00, page 1054 of 1141
6
5
HCH1
HCH0
—
1
0
R/W
R/W
—
Hardware channel select bits
HCH1 HCH2 Analog input channel
0
0
1
1
0
1
(Initial value)
4
3
2
SCH3
SCH2
0
0
0
R/W
R/W
Software channel select bits
SCH3 SCH2 SCH1 SCH0 Analog input channel
0
0
0
1
1
0
1
1
0
0
1
1
*
Notes: 1. If conversion is started by software when SCH3 to
SCH0 are set to 11xx, the conversion result is
undetermined. Hardware- or external-triggered
conversion, however, will be performed on the channel
selected by HCH1 and HCH0.
2. * Don't care.
AN8
(Initial value)
AN9
ANA
ANB
1
0
SCH1
SCH0
0
0
R/W
R/W
(Initial value)
0
AN0
1
AN1
0
AN2
1
AN3
0
AN4
1
AN5
0
AN6
1
AN7
0
AN8
1
AN9
0
ANA
1
ANB
*
Software-triggered conversion
channel is not selected
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