SH7014 Datasheet, PDF (408/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

13. High Speed A/D Converter ⎯ SH7014 ⎯
13.2.3 A/D Control Register (ADCR)
Bit: 7
⎯
Initial value: 0
R/W: R
6
PWR
0
R/W
5
4
TRGS1 TRGS0
0
0
R/W R/W
3
SCAN
0
R/W
2
DSMP
0
R/W
1
BUFE1
0
R/W
0
BUFE0
0
R/W
The ADCR is an 8-bit read/write register used for A/D conversion operation control. The ADCR is
initialized to H'00 by power-on reset or in standby mode.
Bit 7⎯Reserved: This bit always reads as 0. The write value should always be 0.
Bit 6⎯Power (PWR): Designates the conversion start mode for the high speed A/D converter.
Setting the PWR bit to 1 sets high speed start mode, and a 0 sets to low power conversion mode.
See section 13.4.7, Conversion Start Modes for details on the conversion start operation.
Set the PWR bit only while conversion is halted.
Bit 6
PWR
0
1
Description
Low power conversion mode
High speed start mode
(initial value)
Bits 5 and 4⎯Timer Trigger Select 1, 0 (TRGS1, TRGS0): These bits enable or prohibit A/D
conversion starts by trigger signals.
Set the TRGS1, TRGS0 bits only while conversion is halted.
Bit 5
TRGS1
0
1
Bit 4
TRGS0
0
1
0
1
Description
Enable A/D conversion start by software
(initial value)
Enables A/D conversion start by MTU conversion start trigger
Reserved
Reserved
Rev.5.00 Sep. 27, 2007 Page 374 of 716
REJ09B0398-0500