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DS2431+TR Datasheet(PDF) 11 Page - Maxim Integrated Products |
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DS2431+TR Datasheet(HTML) 11 Page - Maxim Integrated Products |
11 / 26 page 1024-Bit, 1-Wire EEPROM ______________________________________________________________________________________ 11 BUS MASTER Tx TA1 (T[7:0]), TA2 (T[15:8]) APPLICABLE TO ALL R/W MEMORY LOCATIONS. DURATION: tPROG * * 1-Wire IDLE HIGH FOR POWER. DS2431 COPIES SCRATCHPAD DATA TO ADDRESS BUS MASTER Rx "1"s AA = 1 BUS MASTER Rx "1"s MASTER Tx RESET? N Y N N MASTER Tx RESET? Y MASTER Tx RESET? BUS MASTER Tx TA1 (T[7:0]), TA2 (T[15:8]) AND E/S BYTE 55h COPY SCRATCHPAD? N Y Y Y N DS2431 Tx "0" DS2431 Tx "1" F0h READ MEMORY? N Y Y N AUTH. CODE MATCH? Y N Y N N T[15:0] < 0090h? PF = 0? ADDRESS < 90h? Y COPY PROTECTED? BUS MASTER Rx "1"s MASTER Tx RESET? N Y DS2431 SETS MEMORY ADDRESS = (T[15:0]) BUS MASTER Rx DATA BYTE FROM MEMORY ADDRESS Y N N MASTER Tx RESET? ADDRESS < 8Fh? N Y MASTER Tx RESET? DS2431 INCREMENTS ADDRESS COUNTER Y TO FIGURE 7a FROM FIGURE 7a Figure 7b. Memory Function Flowchart (continued) |
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