Transition To And Return From Low Power Consumption Mode; Selection Of A Low Power Consumption Mode; Table 1.9 Low Power Consumption Mode Selection - Toshiba TXZ+ TMPM4MNFYAFG Reference Manual

Transition to and Return from Low Power Consumption mode

In order to shift to each Low Power Consumption mode, the IDLE/STOP1 mode is chosen by standby control
register [CGSTBYCR]<STBY[1:0]>, and a WFI (Wait For Interrupt) command is executed. When the transition
to the low power consumption mode has been done by WFI instruction, the return from the mode can be done by
the reset or an interrupt generation. To return by interrupt, it is necessary to set up. Please refer to "interrupt"
chapter of the reference manual "Exception" for details.
Note1: This product does not support a return by events; therefore, do not make a transition to low-power
consumption mode triggered by WFE (Wait For Event).
Note2: This product does not support low power consumption mode by SLEEPDEEP of the Cortex-M4
processor with FPU core. Do not use the <SLEEPDEEP> bit of the system control register.

Selection of a Low Power Consumption mode

Low Power Consumption mode selection is chosen by setup of [CGSTBYCR]<STBY[1:0]>.
Following table shows the mode chosen from a setup of <STBY[1:0]>.

Table 1.9 Low Power Consumption mode selection

Mode [CGSTBYCR]<STBY[1:0]>
IDLE
STOP1
Note: Do not use the settings other than the above.
23 / 64
Clock Control and Operation Mode
00
01
TXZ+ Family
TMPM4M Group(1)
2022-06-24
Rev. 1.1