r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 153

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 10.5
Step (1)
Step (2)
Step (3)
Step (4)
Step (5)
Step (6)
Step (7)
Step (8)
SVC0: Bit in SVDC register
Notes:
1. Execute this routine for all interrupt processing that occurs in wait mode .
2. Do not write 0 to the SVC0 bit with the instruction immediately after 1 is written to the SVC0 bit. Sequential writes in the opposite order are
3. When the SVC0 bit is 1, do not set the CM10 bit in the CM1 register to 1 (stop mode).
4. For entering wait mode, refer to the Notes on Power Control section in the Wait Mode section.
However, this is not required if it is not necessary to start the high-speed clock or high-speed on-chip oscillator in the interrupt routine.
also not allowed.
(Wait until the XIN clock or high-speed on-chip
(transition to low-power-consumption mode
(transition to low-power-consumption mode
Procedure for reducing internal power
oscillator clock oscillation stabilizes)
high-speed on-chip oscillator mode
consumption enabled by the SVC0
high-speed on-chip oscillator clock
high-speed on-chip oscillator clock
low-speed on-chip oscillator mode
Enter high-speed clock mode or
Enter low-speed clock mode or
Preliminary document
Specifications in this document are tentative and subject to change.
Procedure for Reducing Internal Power Consumption Using SVC0 Bit
Stop the XIN clock and
Start the XIN clock or
Enter wait mode
enabled)
disabled)
SVC0  1
SVC0  0
(2, 3)
(2)
(4)
Return from wait mode
by an interrupt
Step (5)
Step (6)
Step (7)
Step (8)
Step (1)
Step (2)
Step (3)
SVC0  0 (transition to low-power-consumption
(Wait until the XIN clock or high-speed on-chip
(When returning from wait mode, the MCU is
(transition to low-power-consumption mode
oscillator clock oscillation stabilizes)
high-speed on-chip oscillator mode
high-speed on-chip oscillator clock
high-speed on-chip oscillator clock
low-speed on-chip oscillator mode
Enter high-speed clock mode or
Enter low-speed clock mode or
Interrupt handling completed
automatically set as above)
Stop the XIN clock and
In the interrupt routine
Start the XIN clock or
mode disabled)
Interrupt handling
enabled)
SVC0  1
(2, 3)
(2)
(Note 1)
If it is necessary to
start the high-speed
clock or high-speed
on-chip oscillator in
the interrupt
routine, execute
steps (6) and (7) in
the routine.
If the high-speed
clock or high-speed
on-chip oscillator
starts in the
interrupt routine,
execute steps (1) to
(3) at the end of the
routine.
10. Power Control
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