SH7619 Datasheet, PDF (261/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 10 Power-Down Modes
Section 10 Power-Down Modes
This LSI supports the following power-down modes: sleep mode, software standby mode, module
standby mode.
10.1 Features
• Supports sleep mode, software standby mode, and module standby
10.1.1 Types of Power-Down Modes
This LSI has the following power-down modes.
• Sleep mode
• Software standby mode
• Module standby mode (cache, U-memory, UBC, H-UDI, and on-chip peripheral modules)
Table 10.1 shows the methods to make a transition from the program execution state, as well as
the CPU and peripheral module states in each mode and the procedures for canceling each mode.
Table 10.1 States of Power-Down Modes
State
Mode
Sleep
CPU
On-Chip
Transition Method CPG CPU Register Memory
Execute SLEEP Runs
instruction with
STBY bit in STBCR
cleared to 0.
Halts
Held
Halts
(contents
remained)
Software Execute SLEEP Halts
standby instruction with
STBY bit in STBCR
set to 1.
Halts
Held
Module Set MSTP bits in
standby STBCR2 to
STBCR4 to 1.
Runs Runs Held
Halts
(contents
remained)
Specified
module
halts
(contents
remained)
On-Chip
Peripheral
Modules
Pins
Canceling
Procedure
Run
Held • Interrupt
other than
user break
• Reset
Halt
Held • NMI, IRQ
• Reset
Specified
module
halts
Held • Clear MSTP
bit to 0
• Power-on
reset
Rev. 5.00 Mar. 15, 2007 Page 223 of 794
REJ09B0237-0500