SH7046 Datasheet, PDF (543/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

Section 21 Power-Down Modes
21.2.3 Module Standby Control Registers 1 and 2 (MSTCR1 and MSTCR2)
MSTCR, comprising two 16-bit readable/writable registers, performs module standby mode
control. Setting a bit to 1, the corresponding module enters module standby mode, while clearing
the bit to 0 clears the module standby mode.
MSTCR1
Initial
Bit
Bit Name Value R/W
15 to 12 
All 1 R/W
11
MSTP27 0
R/W
10
MSTP26 0
R/W
9
MSTP25 0
R/W
8
MSTP24 0
R/W
7, 6

All 0 R
5, 4

All 1 R/W
3
MSTP19 1
R/W
2
MSTP18 1
R/W
1, 0

All 1 R/W
Description
Reserved
These bits are always read as 1, and should always be
written with 1.
On-chip RAM
On-chip ROM
Data transfer controller (DTC)
Set the identical value to MSTP25 and MSTP24,
respectively. When setting module standby, write b'11,
while clearing, write b'00.
Reserved
These bits are always read as 0, and should always be
written with 0.
Reserved
These bits are always read as 1, and should always be
written with 1.
Serial communication interface 3 (SCI_3)
Serial communication interface 2 (SCI_2)
Reserved
These bits are always read as 1, and should always be
written with 1
Rev. 4.00 Dec 05, 2005 page 499 of 564
REJ09B0270-0400