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Section 33 Power-Down Modes
Page 1812 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
Transition to deep standby mode
Read STBCR1
Read DSFR and
clear the flags of DSFR
Execute the SLEEP instruction
Set the corresponding bit in
DSSSR as needed
Set the corresponding bit in
DSCTR as needed
Set the corresponding bit in
DSESR as needed
Set the realtime clock registers
as needed
Perform read/write to the same
arbitrary address in each
retention page of the on-chip
data-retention RAM
Set the STBY and DEEP bits
in STBCR1 to 1
Set the RRAMKP bit in PRAMKP
as needed
Transfer data that needs to be
retained to the corresponding
area
Figure 33.2 Flowchart of Transition to Deep Standby Mode