Rainbow Electronics DS2430A - Manual (Page 14)

DS2430A
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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 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