NEC mPD780065 Series Preliminary User's Manual page 299

(2) STOP mode release
The STOP mode can be released by the following two types of sources.
(a) Release by unmasked interrupt request
When an unmasked interrupt request is generated, the STOP mode is released. If interrupt acknowledge
is enabled after the lapse of oscillation stabilization time, vectored interrupt service is carried out. If interrupt
acknowledge is disabled, the next address instruction is executed.
Figure 19-4. STOP Mode Release by Interrupt Request Generation
Standby release
signal
Operating mode
Oscillation
Clock
Remark The broken line indicates the case when the interrupt request which has cleared the standby status
is acknowledged.
CHAPTER 19 STANDBY FUNCTION
Interrupt
request
STOP instruction
STOP mode
Oscillation stop
Preliminary User's Manual U13420EJ2V0UM00
Wait
(Time set by OSTS)
Oscillation stabilization
wait status
Operating mode
Oscillation
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