SH7670 Datasheet, PDF (403/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 11 Power-Down Modes
11.2.1 Standby Control Register (STBCR)
STBCR is an 8-bit readable/writable register that specifies the state of the power-down mode. This
register is initialized to H'00 by a power-on reset but retains its previous value by a manual reset
or in software standby mode. Only byte access is valid.
Note: See section 11.4, Usage Notes, when writing data to this register.
Bit: 7
6
5
4
3
2
1
0
STBY 






Initial value: 0
0
0
0
0
0
0
0
R/W: R/W R
R
R
R
R
R
R
Initial
Bit
Bit Name Value R/W
7
STBY
0
R/W
6 to 0 
All 0
R
Description
Software Standby
Specifies transition to software standby mode.
0: Executing SLEEP instruction puts chip into sleep
mode.
1: Executing SLEEP instruction puts chip into
software standby mode.
Reserved
These bits are always read as 0. The write value
should always be 0.
Rev. 1.00 Nov. 14, 2007 Page 377 of 1262
REJ09B0437-0100