ST72124J View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72124J

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

2.6 DATA EEPROM

2.6.1 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.

Figure 7. EEPROM Block Diagram

2.6.2 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

EEPROM INTERRUPT

FALLING

EDGE

DE TEC TOR

EECSR

RESERVED

EEPROM

0 0 0 0 0 IE LAT PGM

HIGH VOLTAGE

PUMP

ADDRESS

DECODER

4

ROW

DECODER

4

4

ADDRESS BUS

EEPROM

MEMORY MATRIX

(1 ROW = 16 x 8 BITS)

128

DAT A

MULTIPLEXER

128

16 x 8 BITS

DATA LATCHES

DATA BUS

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