Clock Operation By Mode Transition; Normal >>> Idle >>> Normal Operation Mode Transition; Normal >>> Stop1 >>> Normal Operation Mode Transition; Figure 1.3 Normal >>> Stop1 >>> Normal Operation Mode Transition - Toshiba TXZ+ Series Reference Manual
2-bit risc microcontroller
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1.3.4. Clock operation by mode transition
The clock operation in case of mode transition is shown below.
1.3.4.1. NORMAL >>> IDLE >>> NORMAL Operation mode transition
CPU stops at IDLE mode. The clock supply to a peripheral function holds a setting state. Please perform
operation/stop by the register of each peripheral function, a clock supply setting function, etc. if needed. Execution
of warming-up operation is not performed at the time of the restart operation in NORMAL mode from IDLE state.
After the command (WFI) execution which switches to IDLE mode, a program counter will show the next point
and will be in a CPU idle state. With a release source, it becomes a CPU reboot and, in the case of an enable
interrupt state, the shift to next point of the transition command (WFI) will be done, after the interrupt processing
by release source.
1.3.4.2. NORMAL >>> STOP1 >>> NORMAL Operation mode transition
When returning to NORMAL mode from the STOP1 mode, warming-up is started automatically.
Please set [CGWUPHCR]<WUPT[15:4]> to warming-up time (163.4 µs or more) before moving to the STOP1
mode.
Note: When the RESET_N pin and LVD reset are the release factors, warming-up time is the same as the
operation at the time of warm-reset, and is replaced by "internal processing time" and "CPU operation wait
time". For details, refer to "3.2.2.1. Warm reset by RESET_N pin" and "3.2.2.2. Warm reset by LVD".
Mode
fosc
Warming-up
fsys
(system clock)
Figure 1.3 NORMAL >>> STOP1 >>> NORMAL Operation mode transition
WFI instruction execution/
Sleep on exit
NORMAL
System clock stops
Clock Control and Operation Mode
Generate Rel e ase factor
STOP1
Warming-up time
Start IHOSC1
Start Warming-up
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TXZ+ Family
TMPM4K Group(2)
NORMAL
Warming-up ends
System clock operation
2021-06-15
Rev. 1.1
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