Rev. 1.0, 02/00, page 1054 of 1141
H'D134: A/D Control Register ADCR: A/D Converter
0
0
1
0
R/W
2
0
R/W
3
0
4
0
R/W
5
0
6
1
7
R/W
R/W
R/W
HCH1
0
R/W
CK
HCH0
SCH3
SCH2
SCH1
SCH0
Clock select
0 Conversion frequency = 266 states
(Initial value)
1 Conversion frequency = 134 states
Hardware channel select bits
HCH1 HCH2 Analog input channel
0 0 AN8
(Initial value)
1 AN9
1 0 ANA
1 ANB
Software channel select bits
SCH3 SCH2 SCH1 SCH0 Analog input channel
0 0 0 0 AN0
(Initial value)
1 AN1
1 0 AN2
1 AN3
1 0 0 AN4
1 AN5
1 0 AN6
1 AN7
1 0 0 0 AN8
1 AN9
1 0 ANA
1 ANB
1 * * Software-triggered conversion
channel is not selected
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.
Initial value :
—
—
Bit
R/W
:
: