Reset And Power Control; Outline; Function And Operation; Cold Reset - Toshiba TXZ+ Series Reference Manual

3. Reset and Power Control

Outline

Function classification

Cold reset

(Reset with power on)
Warm reset
(Reset without power on)
Reset by STOP2 mode release
Single boot start up

Function and Operation

This section explain about power on, power off and reset.
Note: Refer to the "Electrical Characteristics" of a datasheet for the time and voltage of description of the symbol
in a figure.
Cold reset
When turn on a power supply, the stabilization time for the built-in regulator, the built-in flash memory, and the
built-in high speed oscillator is necessary The TXZ+ family automatically insert a wait time for the stabilization of
these circuits.
When turning on the power, please make sure that the slope of the power supply voltage rises to the right.
When the power supply voltage drops and rises near POR and PORF detection, it may not operate normally even
if the power supply voltage rises to the guaranteed operating range.
Factor
Reset which occurs at the time of a power supply
Power On Reset
turning on or turning off.
LVD reset Reset which occurs below the set-up voltage
Reset pin Reset by a RESET_N pin
Reset which occurs at the time of power supply turning
PORF reset on or turning off. Reset the flash memory and
debugging circuit with priority.
Reset by SIWDT, OFD, LVD, LOCKUP, and
Internal reset
<SYSRESETREQ>
Reset pin Reset by a RESET_N pin
Reset which is performed to Main Power Domain
Interrupt during return operation from the STOP2 mode.
(STOP2REQ)
Reset pin Reset by a RESET_N pin
Reset when DVDD3 is equal or less than the voltage
LVD reset
which is set on LVD circuit.
MCU is started by the internal boot ROM is used after
-
the reset deassertion.
74 / 88
TMPM4G Group(1)
Clock Control and Operation Mode
Functional Description
TXZ+ Family
2021-06-30
Rev. 1.1