ST72C314N4 Просмотр технического описания (PDF) - STMicroelectronics

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ST72C314N4

8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces

STMicroelectronics 

ST72334xx-Auto, ST72314xx-Auto, ST72124Jx-Auto

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.

Figure 6. EEPROM Block Diagram

6.2 MAIN FEATURES

■ Up to 16 bytes programmed in the same cycle

■ EEPROM mono-voltage (charge pump)

■ Chained erase and programming cycles

■ Internal control of the global programming cycle

duration

■ End of programming cycle interrupt flag

■ Wait mode management

EEPROM INTERRUPT

FALLING

EDGE

DETECTOR

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

DATA

MULTIPLEXER

128

16 x 8 BITS

DATA LATCHES

DATA BUS

19/150

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