Bit 4—Scan Mode (SCAN): Selects single mode or scan mode. For further information on
operation in these modes, see section 15.4, Operation. Clear the ADST bit to 0 before switching
the conversion mode.
Bit 4: SCAN
Description
Single mode
Scan mode
0
1
(Initial value)
Bit 3—Clock Select (CKS): Selects the A/D conversion time. When øP = ø/2, the conversion time
doubles. Clear the ADST bit to 0 before switching the conversion time.
Bit 3: CKS
Description
0
1
Conversion time = 266 states (maximum) (when øP = ø)
Conversion time = 134 states (maximum) (when øP = ø)
(Initial value)
Bits 2 to 0—Channel Select 2 to 0 (CH2 to CH0): These bits and the SCAN bit select the analog
input channels. Clear the ADST bit to 0 before changing the channel selection.
Group Selection
Channel Selection
Description
Scan
CH2
CH1
CH0Single
Mode
Mode
0
0
1
0
1
0
1
0
1
0
1
0
1
AN0 (initial value)
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN0, AN1
AN0 to AN2
AN0 to AN3
AN4
1
AN4, AN5
AN4 to AN6
AN4 to AN7
341
HITACHI [ HITACHI SEMICONDUCTOR ]
