Rainbow-electronics DS2430A Bedienungsanleitung PDF herunterladen (Seite 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 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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Rainbow-electronics DS2430A Bedienungsanleitung Seite 14