Data EEPROM ST7LITE49M
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.
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Up to 32 bytes programmed in the same cycle
EEPROM mono-voltage (charge pump)
Chained erase and programming cycles
Internal control of the global programming cycle duration
Wait mode management
Read-out protection
Figure 6.
EEPROM block diagram
HIGH VOLTAGE
PUMP
EECSR
0 0 0 0 0 0 E2LAT E2PGM
ADDRESS
DECODER
4 ROW
DECODER
4
4
EEPROM
MEMORY MATRIX
(1 ROW = 32 x 8 BITS)
128
DATA
MULTIPLEXER
128
32 x 8 BITS
DATA LATCHES
ADDRESS BUS DATA BUS
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