ST7LITE0 Datasheet, PDF (19/122 Pages) STMicroelectronics – 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI

DATA EEPROM (Cont’d)
5.7 REGISTER DESCRIPTION
EEPROM CONTROL/STATUS REGISTER (EEC-
SR)
Read /Write
Reset Value: 0000 0000 (00h)
7
0
0
0
0
0
0
0 E2LAT E2PGM
Bits 7:2 = Reserved, forced by hardware to 0.
Bit 1 = E2LAT Latch Access Transfer
This bit is set by software. It is cleared by hard-
ware at the end of the programming cycle. It can
only be cleared by software if the E2PGM bit is
cleared.
0: Read mode
1: Write mode
Bit 0 = E2PGM Programming control and status
This bit is set by software to begin the programming
cycle. At the end of the programming cycle, this bit
is cleared by hardware.
0: Programming finished or not yet started
1: Programming cycle is in progress
Note: if the E2PGM bit is cleared during the pro-
gramming cycle, the memory data is not guaran-
teed
Table 4. DATA EEPROM Register Map and Reset Values
Address
(Hex.)
Register
Label
7
6
5
4
EECSR
0030h
Reset Value
0
0
0
0
ST7LITE0, ST7SUPERLITE
3
2
1
0
E2LAT E2PGM
0
0
0
0
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