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DS2430A Datenblatt(PDF) 14 Page - Dallas Semiconductor |
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DS2430A Datenblatt(HTML) 14 Page - Dallas Semiconductor |
14 / 16 page DS2430A 14 of 16 MEMORY FUNCTION EXAMPLE Example: Write 2 data bytes to data memory location 0006 and 0007. Read entire data memory. MASTER MODE DATA (LSB FIRST) COMMENTS TX Reset Reset pulse (480µs to 960µs) RX Presence Presence pulse TX CCh Issue “Skip ROM” command TX 0Fh Issue “Write Scratchpad” command TX 06h Start address = 06h TX <2 Data Bytes> Write 2 bytes of data to scratchpad TX Reset Reset pulse RX Presence Presence pulse TX CCh Issue “Skip ROM” command TX AAh Issue “Read Scratchpad” command TX 06h Start address = 06h RX <2 Data Bytes> Read scratchpad data and verify TX Reset Reset pulse RX Presence Presence pulse TX CCh Issue “Skip ROM” command TX 55h Issue “Copy Scratchpad” command TX A5h Validation key TX <Data Line High> Data line is held high for 10ms by the bus master to provide energy for copying data from the scratchpad to EEPROM TX Reset Reset pulse RX Presence Presence pulse TX CCh Issue “Skip ROM” command TX F0h Issue “Read Memory” command TX 00h Start address = 00h RX <32 Bytes> Read EEPROM data page TX Reset Reset pulse RX Presence Presence pulse |
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