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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DS1972 датащи(PDF) 9 Page - Maxim Integrated Products |
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DS1972 датащи(HTML) 9 Page - Maxim Integrated Products |
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9 / 23 page  DS1972: 1024-Bit EEPROM iButton 9 of 23 Figure 7-1. Memory Function Flow Chart 0Fh Write Scratch- pad ? Bus Master TX TA1 (T7:T0), TA2 (T15:T8) Y N To Figure 7 2 nd Part From Figure 7 2 nd Part Bus Master TX Memory Function Command To ROM Functions Flow Chart (Figure 9) From ROM Functions Flow Chart (Figure 9) Applies only if the memory area is not protected. If write-protected, then the DS1972 copies the data byte from the tar- get address into the SP. If in EPROM mode, then the DS1972 loads the bitwise logical AND of the transmitted byte and the data byte from the targeted address into the SP. Master TX Reset ? Master TX Data Byte To Scratchpad DS1972 sets Sets PF = 1 Clears AA = 0 Sets E2:E0 = T2:T0 DS1972 Increments E2:E0 Master TX Reset ? Y DS1972 TX CRC16 of Command, Address, Data Bytes as they were sent by the bus master N Y PF = 0 N Y E2:E0 = 7 ? Bus Master RX “1”s N N Y T2:T0 = 0 ? |
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