ST72331N4 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72331N4

8-BIT MCU WITH 8 TO 16K OTP/EPROM, 256 EEPROM, 384 TO 512 BYTES RAM, ADC, WDG, SCI, SPI AND 2 TIMERS

STMicroelectronics 

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ST72E331 ST72T331

5.2 EEPROM (EEP)

5.2.1 Introduction

The Electrically Erasable Programmable Read

Only Memory is used to store data that need a non

volatile back-up. The use of the EEPROM requires

a basic protocol described in this chapter.

5.2.2 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 22. EEPROM Block Diagram

INTERRUPT

REQUEST

FALLING

EDGE

DETECTOR

HIGH VOLTAGE PUMP

EEPCR

RESERVED

E2ITE E2LAT E2PGM

12

ROW

.

.

DECODER .

.

.

.

EEPROM

MEMORY

MATRIX

1 ROW = 16 * 8 BITS

ADDRESS

BUS

ADDRESS

DECODER

4

128

4

128

16*8 BITS

DATA LATCHES

DATA

MULTIPLEXER

8

8

BUFFER

DATA

BUS

33/107

33

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