SH7080_09 Datasheet, PDF (1012/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 19 A/D Converter (ADC)
Initial
Bit Bit Name Value
R/W Description
7, 6 CKSL[1:0] 00
R/W Clock Select 1 and 0
Select the A/D conversion time.
00: Pφ/4
01: Pφ/3
10: Pφ/2
11: Pφ
When changing the A/D conversion time, first clear the
ADST bit to 0.
CKSL[1:0] = B'11 can be set while Pφ ≤ 25 [MHz].
5, 4 ADM[1:0] 00
R/W A/D Mode 1 and 0
Select the A/D conversion mode. 2-channel scan
mode is supported only by A/D modules 0 and 1. Do
not select 2-channel scan mode in A/D module 2.
00: Single mode
01: 4-channel scan mode
10: 8-channel scan mode
11: 2-channel scan mode
When changing the operating mode, first clear the
ADST bit to 0.
3
ADCS
0
R/W A/D Continuous Scan
Selects either single-cycle scan or continuous scan in
scan mode. This bit is valid only when scan mode is
selected.
0: Single-cycle scan
1: Continuous scan
When changing the operating mode, first clear the
ADST bit to 0.
2 to 0 CH[2:0] 000
R/W Channel Select 2 to 0
Select analog input channels. See table 19.3.
When changing the operating mode, first clear the
ADST bit to 0.
Note: * Writing 0 to this bit after reading it as 1 is clears the flag and is the only allowed way.
Rev. 4.00 Dec. 15, 2009 Page 952 of 1558
REJ09B0181-0400