SH7280 Datasheet, PDF (1527/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 28 Power-Down Modes
28.3.1 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 possible.
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 Jun. 26, 2008 Page 1497 of 1692
REJ09B0393-0100