SH7046 Datasheet, PDF (539/611 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7046 Series

Section 21 Power-Down Modes
Reset state
Program execution state
RES pin = High
Normal-operation
mode
(main clock)
SLEEP instruction
Program-halted state
SSBY = 0
Sleep mode
(main clock)
SLEEP
instruction
External
interrupt*
SSBY = 1
Software
standby mode
: Transition after exception processing
: Power-down mode
Notes: * NMI and IRQ
• When a transition is made between modes by means of an interrupt, the transition cannot be
made on interrupt source generation alone. Ensure that interrupt handling is performed after
accepting the interrupt request.
• A transition to the reset state occurs when RES is driven low.
Figure 21.1 Mode Transition Diagram
Rev. 4.00 Dec 05, 2005 page 495 of 564
REJ09B0270-0400