Datasheet

Section 24 Power-Down Modes
R01UH0309EJ0500 Rev. 5.00 Page 1229 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
(3) Hardware Standby Mode Timing
Figure 24.3 shows an example of hardware standby mode timing.
When the STBY pin is driven low after the RES pin has been driven low, a transition is made to
hardware standby mode. Hardware standby mode is cleared by driving the STBY pin high,
waiting for the oscillation stabilization time, then changing the RES pin from low to high.
Oscillator
RES
STBY
Oscillation
stabilization
time
Reset
exception
handling
Figure 24.3 Hardware Standby Mode Timing