RL78/G13 CHAPTER 18 STANDBY FUNCTION
R01UH0146EJ0100 Rev.1.00 865
Sep 22, 2011
Figure 18-5. STOP Mode Release by Interrupt Request Generation (2/2)
(2) When high-speed system clock (external clock input) is used as CPU clock
Interrupt
request
STOP
instruction
Standby release signal
Status of CPU
High-speed
system clock
(external clock input)
Oscillates
Normal operation
(high-speed
system clock)
STOP mode
Oscillation stopped
Oscillates
Normal operation
(high-speed
system clock)
Wait
Supply of the
clock is stopped
STOP mode release tuime
Note
(3) When high-speed on-chip oscillator clock is used as CPU clock
Standby release signal
Status of CPU
High-speed on-chip
oscillator clock
Normal operation
(high-speed on-chip
oscillator clock)
Oscillates
STOP mode
Oscillation stopped
Wait for oscillation
accuracy stabilization
Interrupt
request
STOP
instruction
Normal operation
(high-speed on-chip
oscillator clock)
Oscillates
Wait
Supply of the
clock is stopped
STOP mode release tuime
Note
Note STOP mode release time:
• High-speed system clock (external clock input): 19.1 to 31.98
μ
s
• High-speed on-chip oscillator clock: 19.1 to 31.98
μ
s
Remark The broken lines indicate the case when the interrupt request that has released the standby mode is
acknowledged.
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