ST7LITE20 datasheet(15/131 Pages) STMICROELECTRONICS

Part #	ST7LITE20

Description	8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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ST7LITE2

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5 DATA EEPROM

5.1 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.

5.2 MAIN FEATURES

s

Up to 32 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

WAIT mode management

s

Readout protection against piracy

Figure 6. EEPROM Block Diagram

EECSR

HIGH VOLTAGE

PUMP

0

E2LAT

0

E2PGM

EEPROM

MEMORY MATRIX

(1 ROW = 32 x 8 BITS)

ADDRESS

DECODER

DATA

MULTIPLEXER

32 x 8 BITS

DATA LATCHES

ROW

DECODER

DATA BUS

4

128

ADDRESS BUS

1

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