參數(shù)資料
型號: DS2423
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: DRAM
英文描述: 4K-Bit 1-Wire RAM with Counters(帶計(jì)數(shù)器的4K位1線串行RAM)
中文描述: 4K X 1 STANDARD SRAM, PDSO6
封裝: 3.70 X 4 X 1.50 MM, TSOC-6
文件頁數(shù): 12/23頁
文件大?。?/td> 146K
代理商: DS2423
DS2422/DS2423
021998 12/23
MEMORY FUNCTION EXAMPLE (DS2423)
Read page 14 and counts of Input A. Rewrite page 14 with 32 bytes. Read Memory + Counter, Write Scratchpad,
Copy Scratchpad.
MASTER MODE
DATA (LSB FIRST)
COMMENTS
TX
Reset
Reset pulse (480–960
μ
s)
RX
Presence
Presence pulse
TX
CCh
Issue “skip ROM” command
TX
A5h
Issue “read memory + counter” command
TX
C0h
TA1, beginning offset=C0h
TX
01h
TA2, address=01C0h
RX
<32 data bytes>
Read 32 bytes of data
RX
<4 data bytes>
Read Counts of Input A
RX
<4 data bytes>
Read 32 Zero Bits
RX
<2 data bytes>
Read (inverted) CRC16
TX
Reset
Reset pulse
RX
Presence
Presence pulse
TX
CCh
Issue “skip ROM” command
TX
0Fh
Issue “write scratchpad” command
TX
C0h
TA1, beginning offset=C0h
TX
01h
TA2, address=01C0h
TX
<32 data bytes>
Write 32 bytes of data to scratchpad
RX
<2 data bytes>
Read (inverted) CRC16
TX
Reset
Reset pulse
RX
Presence
Presence pulse
TX
CCh
Issue “skip ROM” command
TX
5Ah
Issue “copy scratchpad” command
TX
C0h
TA1
TX
01h
TA2
AUTHORIZATION CODE
TX
1Fh
E/S
RX
<1 data byte>
Read Copy Scratchpad response
TX
Reset
Reset pulse
RX
Presence
Presence pulse, done
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