Warming Up At The Release Of Low Power Consumption Mode; Table 1.12 Warming Up - Toshiba TXZ+ Series Reference Manual

● Released by an interrupt request
When interrupt cancels a Low Power Consumption mode, it is necessary to prepare so that interrupt may
be detected by CPU. The interrupt used for release in STOP1 and STOP2 modes needs to set up CPU, and
needs to set up detection by INTIF.
● Released by Non-Maskable Interrupt (NMI)
The WDT interrupt (INTWDT0, Protect A mode only) and LVD interrupt (INTLVD) can perform release
from the Low Power Consumption modes.
● Released by reset
When released by reset, registers will be initialized in NORMAL mode after release. For detail, refer to
"3.2.8.1. A reset factor and the reset range".
● Released by SysTick interrupt
SysTick interrupt is available only in IDLE mode.
Refer to "Interrupt" chapter of a reference manual of "Exception" about the details of interrupt.

Warming up at the release of Low Power Consumption mode

Warming up may be required because of stability of an internal oscillator at the time of mode transition.
When the transition from STOP1 mode to NORMAL mode is done, the internal oscillation is selected
automatically and the warming up timer starts up. The Output of a system clock is started after warming up time
elapsed.
For this reason, before executing the command which move to the STOP1 mode, set up warming up time by
[CGWUPHCR]<WUPT[15:4]>. For the setting method, refer to the "1.2.4.1The warming up timer for a high
speed oscillation".
The following table shows the necessity of warming up setup at the time of each Operation mode transition.
Operation mode transition
NORMAL → IDLE
NORMAL → STOP1
NORMAL → STOP2
IDLE
STOP1
STOP2 → RESET → NORMAL

Table 1.12 Warming up

→ NORMAL
→ NORMAL
32 / 88
Clock Control and Operation Mode
Warming up setup
Not required.
Not required.
Not required.
Not required.
Required.
Not required.
TXZ+ Family
TMPM4G Group(1)
2021-06-30
Rev. 1.1