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ST72334J2TA/XXX Datasheet(PDF) 21 Page - STMicroelectronics

No. de pieza ST72334J2TA/XXX
Descripción Electrónicos  8-bit MCU for automotive with single voltage Flash/ROM memory, ADC, 16-bit timers, SPI, SCI interfaces
PDF  150 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72334J2TA/XXX Datasheet(HTML) 21 Page - STMicroelectronics

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DATA EEPROM (Cont’d)
6.4 POWER SAVING MODES
Wait mode
The Data EEPROM can enter Wait mode on exe-
cution of the WFI instruction of the microcontroller.
The Data EEPROM will immediately enter this
mode if there is no programming in progress, oth-
erwise the Data EEPROM will finish the cycle and
then enter Wait mode.
Halt mode
The Data EEPROM immediately enters Halt mode
if the microcontroller executes the HALT instruc-
tion. Therefore the EEPROM will stop the function
in progress, and data may be corrupted.
6.5 ACCESS ERROR HANDLING
If a read access occurs while LAT=1, then the data
bus will not be driven.
If a write access occurs while LAT=0, then the
data on the bus will not be latched.
If a programming cycle is interrupted (by software/
RESET action), the memory data will not be guar-
anteed.
Figure 8. Data EEPROM Programming Cycle
LAT
ERASE CYCLE
WRITE CYCLE
PGM
tPROG
READ OPERATION NOT POSSIBLE
WRITE OF
DATA LATCHES
READ OPERATION POSSIBLE
INTERNAL
PROGRAMMING
VOLTAGE
EEPROM INTERRUPT



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