Datasheet

78K0/Ix2 CHAPTER 19 STANDBY FUNCTION
R01UH0010EJ0500 Rev.5.00 612
Feb 28, 2012
Figure 19-6. STOP Mode Release by Interrupt Request Generation (2/2)
(3) When internal high-speed oscillation clock is used as CPU clock
Wait
Note 1
Wait for oscillation
accuracy stabilization
Note 2
Oscillates
Normal operation
(internal high-speed
oscillation clock)
STOP mode
Oscillation stopped
Oscillates
Normal operation
(internal high-speed
oscillation clock)
Internal high-speed
oscillation clock
Status of CPU
Standby release signal
STOP
instruction
Interrupt
request
Notes 1. The wait time is as follows:
• When vectored interrupt servicing is carried out: 17 or 18 clocks
• When vectored interrupt servicing is not carried out: 11 or 12 clocks
2. The wait time for oscillation accuracy stabilization is as follows:
• RMC register = 00H: 102 to 407
s
• RMC register = 56H: 120 to 481
s
Remark The broken lines indicate the case when the interrupt request that has released the standby mode is
acknowledged.
(b) Release by reset signal generation
When the reset signal is generated, STOP mode is released, and then, as in the case with a normal reset
operation, the program is executed after branching to the reset vector address.