SH7018 Datasheet, PDF (281/431 Pages) Renesas Technology Corp – SuperH™ RISC engine

• Bit 3—Clock Select (CKS): Sets the A/D conversion time. Change the conversion time only
when ADST = 0.
Bit 3: CKS
0
1
Description
Conversion time = 266 states (max.)
Conversion time = 134 states (max.)
(Initial value)
• Bits 2 to 0—Channel Select 2 to 0 (CH2 to CH0): These bits, along with the SCAN bit, select
the analog input channel.
Change the channel selection only when ADST = 0.
Bit 2: CH2
0
0
0
0
1
1
1
1
Bit 1: CH1
0
0
1
1
0
0
1
1
Bit 0: CH0
0
1
0
1
0
1
0
1
Description
Single Mode
Scan Mode
AN0 (Initial value)
AN0 (Initial value)
AN1
AN0, AN1
AN2
AN0 to AN2
AN3
AN0 to AN3
AN4
AN4
AN5
AN4, AN5
AN6
AN4 to AN6
AN7
AN4 to AN7
13.2.3 A/D Control Register (ADCR)
The A/D control register (ADCR) is an 8-bit read/write register that enables or disables starting of
A/D conversion by MTU trigger input. The ADCR is initialized to H'7F by a power-on reset.
Bit: 7
6
5
4
3
2
1
0
TRGE —
—
—
—
—
—
—
Initial value: 0
1
1
1
1
1
1
1
R/W: R/W
R
R
R
R
R
R
R
265