SH7147 Datasheet, PDF (936/1108 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 22 Power-Down Modes
Initial
Bit
Bit Name Value R/W
3
⎯
1
R
2 to 0 ⎯
All 0
R
Description
Reserved
This bit is always read as 1. The write value should
always be 1.
Reserved
These bits are always read as 0. The write value
should always be 0.
22.3.3 Standby Control Register 3 (STBCR3)
STBCR3 is an 8-bit readable/writable register that controls the operation of modules in power-
down mode.
Bit: 7
-
Initial value: 1
R/W: R
6
5
4
3
2
1
0
-
MSTP MSTP MSTP MSTP MSTP MSTP
13
12
11
10
9*
8
1
1
1
1
1
1
1
R R/W R/W R/W R/W R/W R/W
Initial
Bit
Bit Name Value R/W Description
7, 6
⎯
All 1
R Reserved
These bits are always read as 1. The write value should
always be 1.
5
MSTP13 1
R/W Module Stop Bit 13
When this bit is set to 1, the supply of the clock to the
SCI_2 is halted.
0: SCI_2 operates
1: Clock supply to SCI_2 halted
4
MSTP12 1
R/W Module Stop Bit 12
When this bit is set to 1, the supply of the clock to the
SCI_1 is halted.
0: SCI_1 operates
1: Clock supply to SCI_1 halted
Rev. 3.00 Oct. 06, 2008 Page 912 of 1080
REJ09B0230-0300