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ST72334J Arkusz danych(PDF) 17 Page - STMicroelectronics |
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ST72334J Arkusz danych(HTML) 17 Page - STMicroelectronics |
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17 / 125 page  ST72334J/N, ST72314J/N, ST72124J 17/125 2.6 DATA EEPROM 2.6.1 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. 2.6.2 Main Features s Up to 16 Bytes programmed in the same cycle s EEPROM mono-voltage (charge pump) s Chained erase and programming cycles s Internal control of the global programming cycle duration s End of programming cycle interrupt flag s WAIT mode management Figure 7. EEPROM Block Diagram EECSR EEPROM INTERRUPT FALLING EDGE HIGH VOLTAGE PUMP IE LAT 0 00 00 PGM EEPROM RESERVED DETECTOR EEPROM MEMORY MATRIX (1 ROW = 16 x 8 BITS) ADDRESS DECODER DATA MULTIPLEXER 16 x 8 BITS DATA LATCHES ROW DECODER DATA BUS 4 4 4 128 128 ADDRESS BUS |
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