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

4 SUPPLY, RESET AND CLOCK MANAGEMENT

The ST72334J/N, ST72314J/N and ST72124J mi-

crocontrollers include a range of utility features for

securing the application in critical situations (for

example in case of a power brown-out), and re-

ducing the number of external components. An

overview is shown in Figure 12.

Main Features

s Supply Manager with Main supply Low voltage

detection (LVD)

s Reset Sequence Manager (RSM)

s Multi-Oscillator (MO)

– 4 Crystal/Ceramic resonator oscillators

– 1 External RC oscillator

– 1 Internal RC oscillator

s Clock Security System (CSS)

– Clock Filter

– Backup Safe Oscillator

Figure 12. Clock, Reset and Supply Block Diagram

MCO

OSC 2

OSC 1

CLOCK SECUR ITY SYSTE M

(CSS )

MULTI-

O SCILLATO R

(MO)

CLOCK

FILTE R

SAFE

OSC

fOSC

MAIN CLOCK

CONTROLLER

(MCC)

fCPU

RESET

RESET SEQUEN CE

MANAG ER

(RSM)

FROM

WATCH DOG

PERIP HERAL

VDD

VSS

LOW VOLTAGE

DETECTO R

(LVD)

LVD

CSS WDG

CRSR 0

0

0 RF 0 IE D RF

CSS INTER RUPT

24/125

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