Renesas RL78 Series User Manual page 722

RL78/G1D
(2) Timing diagram when the interrupt request signal is generated in the SNOOZE mode
Figure 19-5. When the Interrupt Request Signal is Generated in the SNOOZE Mode
instruction
Standby release
Note 1
signal
Normal operation
(high-speed
on-chip
oscillator clock)
Status of CPU
High-speed
Oscillates
on-chip oscillator
clock
Notes 1. For details of the standby release signal, see Figure 18-1.
2. Transition time from STOP mode to SNOOZE mode
3. Transition time from SNOOZE mode to normal operation
4. Enable the SNOOZE mode (AWC = 1 or SWC = 1) immediately before switching to the STOP mode.
5. Be sure to release the SNOOZE mode (AWC = 0 or SWC = 0) immediately after return to the normal
operation.
(3) Timing diagram when the interrupt request signal is not generated in the SNOOZE mode
Figure 19-6. When the Interrupt Request Signal is not Generated in the SNOOZE Mode
Standby release
Note 1
signal
Normal operation
(high-speed
on-chip
oscillator clock)
Status of CPU
Oscillates
High-speed
on-chip oscillator
clock
Notes 1. For details of the standby release signal, see Figure 18-1.
2. Transition time from STOP mode to SNOOZE mode
3. Enable the SNOOZE mode (AWC = 1 or SWC = 1) immediately before switching to the STOP mode.
Remark For details of the SNOOZE mode function, see CHAPTER 12 A/D CONVERTER and CHAPTER 13 SERIAL
ARRAY UNIT.
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
STOP Trigger
detection
Note 4
STOP mode Note 2
Oscillation
stopped
Wait for oscillation accuracy stabilization
STOP Trigger
instruction detection
Note 3
Note 2
STOP mode
Oscillation
stopped
Wait for oscillation accuracy stabilization
CHAPTER 19 STANDBY FUNCTION
Interrupt request
SNOOZE mode
(A/D conversion,
Note 3
UART/CSI)
Oscillates
SNOOZE mode
(A/D conversion,
UART/CSI) (Waiting for a trigger to switch to the SNOOZE mode)
Oscillates
Note 5
Normal operation
(high-speed on-chip oscillator clock)
STOP mode
Oscillation stopped
H
L
L
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