ST7LITE20F2 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7LITE20F2
STMicroelectronics
'ST7LITE20F2' PDF : 170 Pages View PDF
Data EEPROM
5
Data EEPROM
ST7LITE20F2 ST7LITE25F2 ST7LITE29F2
5.1
Introduction
The Electrically Erasable Programmable Read Only Memory can be used as a non-volatile
backup for storing data. Using the EEPROM requires a basic access protocol described in
this chapter.
5.2
Main features
● 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
EECSR
0
0
0
0
0
0 E2LAT E2PGM
High voltage
pump
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
5.3
Memory access
The Data EEPROM memory read/write access modes are controlled by the E2LAT bit of the
EEPROM Control/Status register (EECSR). The flowchart in Figure 7 describes these
different memory access modes.
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Doc ID 8349 Rev 5
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