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ST72334J Datasheet(PDF) 20 Page - STMicroelectronics

Part No. ST72334J
Description  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST72334J Datasheet(HTML) 20 Page - STMicroelectronics

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ST72334J/N, ST72314J/N, ST72124J
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DATA EEPROM (Cont’d)
2.6.6 Register Description
CONTROL/STATUS REGISTER (CSR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:3 = Reserved, forced by hardware to 0.
Bit 2 = IE
Interrupt enable
This bit is set and cleared by software. It enables the
Data EEPROM interrupt capability when the PGM
bit is cleared by hardware. The interrupt request is
automatically cleared when the software enters the
interrupt routine.
0: Interrupt disabled
1: Interrupt enabled
Bit 1 = LAT
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 PGM bit is cleared.
0: Read mode
1: Write mode
Bit 0 = PGM
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 clearedby hardware and an interrupt is generated
if the ITE bit is set.
0: Programming finished or not yet started
1: Programming cycle is in progress
Note: if the PGM bit is cleared during the program-
ming cycle, the memory data is not guaranteed.
Table 3. DATA EEPROM Register Map and Reset Values
70
0000
0
IE
LAT
PGM
Address
(Hex.)
Register
Label
765
4
321
0
002Ch
EECSR
Reset Value
0
0
000
IE
0
RWM
0
PGM
0


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