Datasheet

Section 6 Power-Down Modes
Rev. 1.50 Sep. 18, 2007 Page 90 of 584
REJ09B0240-0150
6.1 Register Descriptions
The registers related to power-down modes are listed below. For details on the serial mode control
register (SCI3_3 module standby), see section 17.1, Features.
• System control register 1 (SYSCR1)
• System control register 2 (SYSCR2)
• System control register 3 (SYSCR3)
• Module standby control register 1 (MSTCR1)
• Module standby control register 2 (MSTCR2)
• Module standby control register 4 (MSTCR4)
• Serial Mode Control Register (SMCR)
6.1.1 System Control Register 1 (SYSCR1)
SYSCR1, SYSCR2, and SYSCR3 control the power-down modes.
Bit Bit Name
Initial
Value R/W Description
7 SSBY 0 R/W Software Standby
This bit selects the mode to transit after the execution
of the SLEEP instruction.
0: Enters sleep mode or subsleep mode.
1: Enters standby mode.
For details, see table 6.2.