H8SX1622 Datasheet, PDF (940/1056 Pages) Renesas Technology Corp – Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

Section 24 Power-Down Modes
Clear a reset by RES
Reset exception handling
Program start
RSTSR.
No
DPSRSTF = 0
Yes
Set DPSWCR.WTSTS5-0
Set oscillation setting time
Read DPSIFR
Set
SBYCR.SSBY to 1
DPSBYCR.DPSBY to 1
DPSBYCR.RAMCUT2-0
Select deep software
standby mode
Set PnDDR,PnDR
Set SCKCR.PSTOP1 to 1
Identify deep software
standby mode clearing
source (1)
Set pin state, that is intended
after clearing IOKEEP to 0
Set PnDDR,PnDR
Set SBYCR.OPE
Set DPSBYCR.IOKEEP to 1
Set pin state in deep
software standby mode
and after exit from deep
software standby mode
Set DPSBYCR.IOKEEP to 0
Set SCKCR.PSTOP1 to 0
Releases pin states that have been
retained since the transition to deep
software standby mode
Start Bφ output
Set DPSIEGR
Set DPSIER
Clear DPSIFR
Set deep software
standby mode clearing
interrupt
Execute a program
corresponding to the
clearing source that
was identified in (1)
Execute SLEEP instruction
Deep software
standby mode
An interrupt is generated
by exit from deep software
standby mode.
Figure 24.7 Flowchart of Deep Software Standby Mode Operation
Rev. 1.00 Nov. 01, 2007 Page 912 of 1024
REJ09B0414-0100