ST72334J_03 datasheet(18/153 Pages) STMICROELECTRONICS

Part #	ST72334J

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

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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ST72334J/N, ST72314J/N, ST72124J

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6 DATA EEPROM

6.1 INTRODUCTION

The Electrically Erasable Programmable Read

Only Memory can be used as a non volatile back-

up for storing data. Using the EEPROM requires a

basic access protocol described in this chapter.

6.2 MAIN FEATURES

s

Up to 16 Bytes programmed in the same cycle

s

EEPROM mono-voltage (charge pump)

s

Chained erase and programming cycles

s

Internal control of the global programming cycle

duration

s

End of programming cycle interrupt flag

s

WAIT mode management

Figure 7. EEPROM Block Diagram

EECSR

EEPROM INTERRUPT

FALLING

EDGE

HIGH VOLTAGE

PUMP

IE

LAT

0

PGM

EEPROM

RESERVED

DETECTOR

EEPROM

MEMORY MATRIX

(1 ROW = 16 x 8 BITS)

ADDRESS

DECODER

DATA

MULTIPLEXER

16 x 8 BITS

DATA LATCHES

ROW

DECODER

DATA BUS

4

128

ADDRESS BUS

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