Toshiba TXZ+ TMPM4MNFYAFG Reference Manual

TXZ+ FamilyTMPM4M Group(1)Clock Control and Operation Mode2022-06-24Rev. 1.152 / 643. Reset and power supply control3.1. OutlinesFunction classification Factor Functional DescriptionCold reset(Reset by turning on a power supply)Power On Reset Reset which occurs at the time of a power supply turningon or turning off.LVD reset Reset which occurs below the set-up voltageReset pin Reset by a RESET_N pinPORF reset Reset that occurs when power is turned on or off andflash memory and debug circuits are reset with priority.Warm reset(Reset without turning on a powersupply)Internal reset Reset by SIWDT, OFD, LVD, LOCKUP, andReset pin Reset by a RESET_N pinSingle boot starting Reset pin After reset is released, it starts from the internal bootROM.3.2. Description of function and operationThis chapter describes the power-on, power-off, and reset related items.Note: Refer to "Electrical Characteristics" of a datasheet for the time and voltage of description of thesymbol in a figure.3.2.1. Cold resetWhen turn on a power supply, the stabilization time for the built-in regulator, the built-in flash memory, and thebuilt-in high speed oscillator is necessary. The TXZ+ family automatically insert a wait time for the stabilizationof these circuits.When turning on the power, make sure that the slope of the power supply voltage rises to the right. If the powersupply voltage drops and rises near POR and PORF detection voltage, it may not operate normally even if thepower supply voltage rises to the guaranteed operating range thereafter.