Datasheet

Table Of Contents
Section 2 CPU
REJ09B0140-0900 Rev. 9.00 Page 57 of 846
Sep 16, 2010
H8S/2215 Group
Exception handling state
Bus-released state
Hardware standby mode
*
2
Software standby mode
Reset state
*
1
Sleep mode
Power-down state
Program execution state
End of bus request
Bus request
Interrupt request
External interrupt request
RES = High,
MRES = High
Request for exception handling
STBY = High, RES = Low
End of bus
request
Bus request
SLEEP instruction,
SSBY = 0
SLEEP instruction,
SSBY = 1
Notes: 1.
2.
From any state except hardware standby mode, a transition to the reset state occurs whenever RES
goes low. A transition can also be made to the reset state when the watchdog timer overflows.
From any state except hardware standby mode and power-on reset state, a transition to the manual
reset state occurs whenever MRES goes low.
From any state, a transition to hardware standby mode occurs when STBY goes low.
End of exception
handling
Figure 2.13 State Transitions