Datasheet
Section 6 Power-Down Modes 
    Rev. 3.00 Mar. 15, 2006 Page 79 of 526 
   REJ09B0060-0300 
6.1.3  Module Standby Control Register 1 (MSTCR1) 
MSTCR1 allows the on-chip peripheral modules to enter a standby state in module units. 
Bit Bit Name 
Initial 
Value R/W Description 
7   0  Reserved 
This bit is always read as 0. 
6  MSTIIC  0  R/W  IIC2 Module Standby 
IIC2 enters standby mode when this bit is set to 1 
5  MSTS3  0  R/W  SCI3 Module Standby 
SCI3 enters standby mode when this bit is set to 1 
4  MSTAD  0  R/W  A/D Converter Module Standby 
A/D converter enters standby mode when this bit is set 
to 1 
3  MSTWD  0  R/W  Watchdog Timer Module Standby 
Watchdog timer enters standby mode when this bit is 
set to 1.When the internal oscillator is selected for the 
watchdog timer clock, the watchdog timer operates 
regardless of the setting of this bit 
2  MSTTW  0  R/W  Timer W Module Standby 
Timer W enters standby mode when this bit is set to 1 
1  MSTTV  0  R/W  Timer V Module Standby 
Timer V enters standby mode when this bit is set to 1 
0  MSTTA  0  R/W  RTC Module Standby 
RTC enters standby mode when this bit is set to 1 










