Hitachi SH7032 - A;D Control Register (ADCR)

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• Bit 3 (Clock Select (CKS)): CKS selects the A/D conversion time. The conversion time should
be changed only when the ADST bit is cleared to 0.
Bit 3 (CKS) Description
0 Conversion time = 266 states (maximum) (Initial value)
1 Conversion time = 134 states (maximum)
• Bits 2–0 (Channel Select 2–0 (CH2–CH0)): CH2–CH0 select analog input channels together
with the SCAN bit. The channel selection should be changed only when the ADST bit is
cleared to 0.
Group Select Channel Select Selected Channels
CH2 CH1 CH0 Single Mode Scan Mode
0 0 0 AN0 AN0 (Initial value)
0 1 AN1 AN0 and AN1
1 0 AN2 AN0–AN2
1 1 AN3 AN0–AN3
1 0 0 AN4 AN4
0 1 AN5 AN4 and AN5
1 0 AN6 AN4–AN6
1 1 AN7 AN4–AN7
14.2.3 A/D Control Register (ADCR)
The A/D control register (ADCR) is an 8-bit read/write register that selects whether or not to start
the A/D conversion when an external trigger is input. ADCR is initialized to H'7F by a reset and in
standby mode.
Bit: 7 6 5 4 3 2 1 0
Bit name: TRGE — — — — — — —
Initial value: 0 1 1 1 1 1 1 1
R/W: R/W — — — — — — —