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1.3. Operation mode
There are NORMAL mode and a Low Power consumption mode (IDLE, STOP1) in this product as an Operation
mode, and it can reduce power consumption by performing mode changes according to directions for use.
1.3.1. Details of an Operation mode
The feature in each mode
The feature in NORMAL, Low power consumption modes is as follows.
● NORMAL mode
CPU core and peripheral circuits operate with the high speed oscillation clock. After reset release, the
system operates in NORMAL mode.
● Low power consumption mode
The feature in Low power consumption modes is as follows.
‒
IDLE mode
It is the mode which CPU stops.
The peripheral function should perform operation/stop by the register of each peripheral function, a clock
supply setting function, etc
Note: Note that the CPU cannot clear the watchdog timer in IDLE mode.
‒
STOP1 mode
In this mode, all the internal circuits including the internal oscillator stop.
If STOP1 mode is canceled, the internal high speed oscillator1 (IHOSC1) will start oscillation, and the
system will return to NORMAL mode.
Please disable interrupt which is not used for STOP1 release before shifting to the STOP1 mode.
Clock Control and Operation Mode
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TXZ+ Family
TMPM4M Group(1)
2022-06-24
Rev. 1.1
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