SH7032 Datasheet, PDF (443/687 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 14 A/D Converter
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)
0
1
Description
Conversion time = 266 states (maximum)
Conversion time = 134 states (maximum)
(Initial value)
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
CH2
0
0
0
1
1
1
0
0
1
1
Channel Select
CH1
CH0
0
1
0
1
0
1
0
1
Selected Channels
Single Mode
Scan Mode
AN0
AN0 (Initial value)
AN1
AN0 and AN1
AN2
AN0–AN2
AN3
AN0–AN3
AN4
AN4
AN5
AN4 and AN5
AN6
AN4–AN6
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
Initial value
Read/Write
7
6
5
4
3
2
1
0
TRGE
—
—
—
—
—
—
—
0
1
1
1
1
1
1
1
R/W
—
—
—
—
—
—
—
Rev. 7.00 Jan 31, 2006 page 417 of 658
REJ09B0272-0700