Stop Mode Release By Interrupt Request Generation - NEC PD78056F User Manual

(2) STOP mode release
The STOP mode can be cleared with the following three types of sources.
(a) Release by unmasked interrupt request
The STOP mode is cleared upon generation of an unmasked interrupt request. If interrupt acknowledge
is enabled, vectored interrupt servicing is performed after the lapse of the oscillation stabilization time.
If interrupt acknowledge is disabled, the next address instruction is executed.
Figure 23-4. STOP Mode Release by Interrupt Request Generation
Standby
Release Signal
Operationg
Mode
Oscillation
Clock
Remark The broken line indicates the case when the interrupt request which has cleared the standby
status is acknowledged.
(b) Release by unmasked test input
The STOP mode is cleared by unmasked test input. After the lapse of the oscillation stabilization time,
the instruction at the next address after the STOP instruction is executed.
CHAPTER 23 STANDBY FUNCTION
STOP Interrupt
Instruction Request
STOP Mode
Oscillation Stop
Wait
(Time set by OSTS)
Oscillation Stabilization Operating
Wait Status Mode
Oscillation
521