ST72P314J2T View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72P314J2T

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES

STMicroelectronics 

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ST72334J/N, ST72314J/N, ST72124J

RESET SEQUENCE MANAGER (Cont’d)

Internal Low Voltage Detection RESET

Two different RESET sequences caused by the in-

ternal LVD circuitry can be distinguished:

s Power-On RESET

Figure 17. LVD RESET Sequences

VDDnominal

VLVDr

VDD

s Voltage Drop RESET

The device RESET pin acts as an output that is

pulled low when VDD<VLVDr (rising edge) or

VDD<VLVDf (falling edge) as shown in Figure 9.

VDD

VDDnominal

VLVDr

VLVDf

RUN

DELAY

RESET

INTERNAL RESET FETCH

4096 CLOCK CYCLES VECTOR

RUN

EXTERNAL RESET SOURCE

RESET PIN

WATCHDOG RESET

RESET

DELAY

INTERNAL RESET FETCH

4096 CLOCK CYCLES VECTOR

RUN

EXTERNAL RESET SOURCE

RESET PIN

WATCHDOG RESET

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