ST7LITE49K2 STMicroelectronics, ST7LITE49K2 Datasheet - Page 29
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ST7LITE49K2
Manufacturer Part Number
ST7LITE49K2
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST7LITE49K2.pdf
(245 pages)
Specifications of ST7LITE49K2
8 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance
10K write/erase cycles guaranteed Data retention
256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention
20 years at 55 °C.
Clock Sources
Internal trimmable 8 MHz RC oscillator, auto-wakeup internal low power - low frequency oscillator, crystal/ceramic resonator or external clock
Five Power Saving Modes
Halt, Active-halt, Auto-wakeup from Halt, Wait and Slow
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ST7LITE49K2
5
5.1
5.2
Data EEPROM
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.
Main features
●
●
●
●
●
●
Figure 6.
EECSR
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
EEPROM block diagram
0
ADDRESS BUS
0
DECODER
ADDRESS
0
0
4
0
DECODER
0
4
4
ROW
E2LAT
E2PGM
MULTIPLEXER
128
DATA
(1 ROW = 32 x 8 BITS)
MEMORY MATRIX
HIGH VOLTAGE
EEPROM
DATA BUS
PUMP
DATA LATCHES
32 x 8 BITS
128
Data EEPROM
29/245
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