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ST7LITEU05 数据表(PDF) 14 Page - STMicroelectronics |
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ST7LITEU05 数据表(HTML) 14 Page - STMicroelectronics |
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14 / 115 page  ST7LITEU05 ST7LITEU09 14/115 5 DATA EEPROM 5.1 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. 5.2 MAIN FEATURES ■ 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 ■ Readout protection Figure 7. EEPROM Block Diagram EECSR HIGH VOLTAGE PUMP 0 E2LAT 0 0 0 0 0 E2PGM EEPROM MEMORY MATRIX (1 ROW = 32 x 8 BITS) ADDRESS DECODER DATA MULTIPLEXER 32 x 8 BITS DATA LATCHES ROW DECODER DATA BUS 4 4 4 128 128 ADDRESS BUS 1 |
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