NEC mPD789426 Series User Manual page 285

(2) Releasing STOP mode
The STOP mode can be released by the following two types of sources:
(a) Releasing by unmasked interrupt request
The STOP mode can be released by an unmasked interrupt request. In this case, if the interrupt is
enabled to be acknowledged, vectored interrupt processing is performed, after the oscillation
stabilization time has elapsed. If the interrupt is disabled, the instruction at the next address is
executed.
Standby
release signal
Operation
Oscillation
Clock
Remark The broken line indicates the case where the interrupt request that has released the standby mode is
acknowledged.
CHAPTER 15 STANDBY FUNCTION
Figure 15-4. Releasing STOP Mode by Interrupt
STOP
instruction
STOP mode
mode
Oscillation
stops
User's Manual U15075EJ1V0UM00
Wait
(set time by OSTS)
Oscillation stabilization
wait status
Oscillation
Operation
mode
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