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574
Channel
Selection
Description
Single mode
Scan mode
CH1
CH0
A/D0
A/D1
A/D0
A/D1
0
0
AN0
(Initial value)
AN4
(Initial value)
AN0
AN4
1
AN1
AN5
AN0, AN1
AN4, AN5
1
0
AN2
AN6
AN0, AN1
AN4–AN6
1
AN3
AN7
AN0–AN3
AN4–AN7
16.2.3
A/D Control Register (ADCR0, ADCR1)
A/D control registers (ADCR0, 1) are registers that can read/write in 8 bits and enables or disables
A/D conversion start of the external trigger input. There are the ADCR0 (A/D0) and ADCR1
(A/D1).
ADCR is initialized to H'7F during power-on reset and standby mode. Manual reset does not
initialize ADCR.
—
TRGE
—
—
—
—
—
—
7
6
5
4
3
2
1
0
0
1
1
1
1
1
1
1
R/W :
R/W
R
R
R
R
R
R
R
Initial value :
Bit :
•
Bit 7—Trigger Enable (TRGE): Enables or disables A/D conversion start of input from
external or MTU trigger.
Bit 7:
TRGE
Description
0
Disables A/D conversion start of external or MTU trigger
(Initial value)
1
Starts A/D conversion on last transition edge of A/D conversion trigger input pin
(
ADTRG
) or MTU trigger.
A/D0 and A/D1 are common for external trigger pin and MTU trigger.
A/D0 and A/D1 settings are of logical sum.
•
Bits 6–0—Reserved bits: These bits always read as 1. The write value should always be 1.
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