HD6432345 Datasheet, PDF (637/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

Software standby mode is then cleared at the rising edge on the NMI pin.
Oscillator
ø
NMI
NMIEG
SSBY
NMI exception
Software standby mode
handling
(power-down mode)
NMIEG=1
SSBY=1
SLEEP instruction
Oscillation
stabilization
time t_OSC2
NMI exception
handling
Figure 19.2 Software Standby Mode Application Example
19.6.5 Usage Notes
I/O Port Status: In software standby mode, I/O port states are retained. If the OPE bit is set to 1,
the address bus and bus control signal output is also retained. Therefore, there is no reduction in
current dissipation for the output current when a high-level signal is output.
Current Dissipation during Oscillation Stabilization Wait Period: Current dissipation
increases during the oscillation stabilization wait period.
627