H8SX1544 Datasheet, PDF (853/974 Pages) Renesas Technology Corp – Renesas 32-Bit CISC Microcomputer H8SX Family/H8SX/1500 Series

Section 24 Power-Down Modes
Reset state
RES pin = high
STBY pin = high, RES pin = low
Program halted state
STBY pin = low
Hardware
standby mode
SSBY = 0
Sleep mode
Main clock
(SUBCKSEL = 0)
Program
execution state
Main clock
(SUBCKSEL = 0)
Sub clock
(SUBCKSEL = 1)
SLEEAPll iinntsetrrurucptiotsn
SLEEP ^instruction
Interrupt^*1
WKCKSEL
SLInEteErPruipnts_*tr2uction
=0
WKCKSSLEELE=P1instruction _Interrupt*2
Sub-clock
(SUBCKSEL = 1)
SSBY = 0, ACSE = 1
MSTPCR = H'FFFFFFFF
All-module-clock-
stop mode
Main clock
(SUBCKSEL = 0)
Sub clock
(SUBCKSEL = 1)
SSBY = 1
Software
standby mode
Oscillator stopped
(XTALSTP = 1)
Oscillator operating
(XTALSTP = 0)
Transition after exception handling
Notes: From any state, hardware standby mode is entered when STBY is driven low.
From any state except for hardware standby mode, the reset state is entered when RES is driven low.
1. NMI, IRQ0 to IRQ15, WAT interrupt, or watchdog timer interrupt.
2. NMI, IRQ0 to IRQ15, or WAT interrupt. Note that IRQ is only valid when the corresponding bit in SSIER
is set to 1.
Figure 24.1 Mode Transitions
Rev.2.00 Oct. 16, 2007 Page 799 of 916
REJ09B0381-0200