ds2423 Maxim Integrated Products, Inc., ds2423 Datasheet - Page 12
ds2423
Manufacturer Part Number
ds2423
Description
Ds2423 4kbit 1-wire Ram With Counter
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS2423.pdf
(25 pages)
Available stocks
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Quantity
Price
Company:
Part Number:
ds2423P+
Manufacturer:
MICRON
Quantity:
1 900
MEMORY FUNCTION EXAMPLE
Example: Write two data bytes to memory location 0026 and 0027. Read entire memory.
MASTER MODE
RX
RX
RX
RX
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
DATA (LSB FIRST)
<2 data bytes>
<2 data bytes>
<512 bytes>
Presence
Presence
Presence
Presence
Presence
Reset
Reset
Reset
Reset
Reset
AAh
CCh
CCh
CCh
CCh
5Ah
0Fh
26h
00h
26h
00h
07h
26h
00h
07h
F0h
00h
00h
Reset pulse (480-960 µs)
Presence pulse
Issue “skip ROM” command
Issue “write scratchpad” command
TA1, beginning offset=26h
TA2, address=0026h
Write 2 bytes of data to scratchpad
Reset pulse
Presence pulse
Issue “skip ROM” command
Issue “read scratchpad” command
Read TA1, beginning offset=26h
Read TA2, address=0026h
Read E/S, ending offset=7h, flags=0h
Read scratchpad data and verify
Reset pulse
Presence pulse
Issue “skip ROM” command
Issue “copy scratchpad” command
TA1
TA2
E/S
Reset pulse
Presence pulse
Issue “skip ROM” command
Issue “read memory” command
TA1, beginning offset=0
TA2, address=0000h
Read entire memory
Reset pulse
Presence pulse, done
12 of 25
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