DS2430A Maxim, DS2430A Datasheet - Page 15

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DS2430A

Manufacturer Part Number
DS2430A
Description
The DS2430A 256-bit 1-Wire® EEPROM identifies and stores relevant information about the product to which it is associated
Manufacturer
Maxim
Datasheet

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MEMORY FUNCTION EXAMPLE
Example: Write 2 data bytes to data memory locations 0006h and 0007h. Read entire data memory.
MASTER MODE
TX
RX
TX
TX
TX
TX
TX
RX
TX
TX
TX
RX
TX
RX
TX
TX
TX
TX
TX
RX
TX
TX
TX
RX
TX
RX
DATA (LSB FIRST)
<Data Line High>
<2 Data Bytes>
<2 Data Bytes>
<32 Bytes>
Presence
Presence
Presence
Presence
Presence
Reset
Reset
Reset
Reset
Reset
AAh
CCh
CCh
CCh
CCh
A5h
0Fh
F0h
06h
06h
55h
00h
Reset pulse (480µs to 960µs)
Presence pulse
Issue “Skip ROM” command
Issue “Write Scratchpad” command
Start address = 06h
Write 2 bytes of data to scratchpad
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “Read Scratchpad” command
Start address = 06h
Read scratchpad data and verify
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “Copy Scratchpad” command
Validation key
Data line must be above V
Reset pulse
Presence pulse
Issue “Skip ROM” command
Issue “Read Memory” command
Start address = 00h
Read EEPROM data page
Reset pulse
Presence pulse
15 of 19
COMMENTS
PUPmin
for t
PROG
.
DS2430A

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