upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 419

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(a) Release by unmasked interrupt request
Standby release signal
Standby release signal
When an unmasked interrupt request is generated, the STOP mode is released.
stabilization time has elapsed, if interrupt acknowledgment is enabled, vectored interrupt servicing is carried
out. If interrupt acknowledgment is disabled, the next address instruction is executed.
Remark The broken lines indicate the case when the interrupt request that has released the standby mode
Internal high-speed
oscillation clock
(X1 oscillation)
Status of CPU
Status of CPU
system clock
High-speed
is acknowledged.
(2) When internal high-speed oscillation clock is used as CPU clock
Figure 14-6. STOP Mode Release by Interrupt Request Generation
(1) When high-speed system clock is used as CPU clock
(internal high-speed
Operating mode
Normal operation
oscillation clock)
system clock)
(high-speed
Oscillates
Oscillates
instruction
CHAPTER 14 STANDBY FUNCTION
Preliminary User’s Manual U19014EJ1V0UD
STOP
instruction
STOP
Oscillation stopped
Oscillation stopped
STOP mode
STOP mode
Oscillation stabilization time (set by OSTS)
Wait for oscillation
stabilization
accuracy
Oscillation stabilization wait
(HALT mode status)
(set by OSTS)
Oscillates
(internal high-speed
Normal operation
oscillation clock)
Wait
Oscillates
Operating mode
system clock)
(high-speed
After the oscillation
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