ST7LITE2
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.
Figure 6. EEPROM Block Diagram
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
HIGH VOLTAGE
PUMP
EECSR
0
0
0
0
0
0 E2LAT E2PGM
ADDRESS
DECODER
4
ROW
DECODER
4
4
ADDRESS BUS
EEPROM
MEMORY MATRIX
(1 ROW = 32 x 8 BITS)
128
DATA
MULTIPLEXER
128
32 x 8 BITS
DATA LATCHES
DATA BUS
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