參數(shù)資料
型號(hào): 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(yè)數(shù): 4/23頁(yè)
文件大?。?/td> 146K
代理商: DS2423
DS2422/DS2423
021998 4/23
HIERARCHICAL STRUCTURE FOR 1–WIRE PROTOCOL
Figure 2
1–WIRE ROM FUNCTION
COMMANDS (SEE FIGURE 9)
DS242X SPECIFIC
MEMORY FUNCTION
COMMANDS
(SEE FIGURE 7)
COMMAND
LEVEL:
AVAILABLE
COMMANDS:
DATA FIELD
AFFECTED:
READ ROM
MATCH ROM
SEARCH ROM
SKIP ROM
OVERDRIVE SKIP ROM
OVERDRIVE MATCH ROM
64–BIT ROM
64–BIT ROM
64–BIT ROM
N/A
N/A
64–BIT ROM
WRITE SCRATCHPAD
READ SCRATCHPAD
COPY SCRATCHPAD
256–BIT SCRATCHPAD
256–BIT SCRATCHPAD
DATA MEMORY,
WRITE CYCLE COUNTER
DATA MEMORY
DATA MEMORY,
COUNTER
READ MEMORY
READ MEMORY
BUS
MASTER
1–WIRE BUS
OTHER
DEVICES
DS242X
+ COUNTER
64–BIT LASERED ROM
Figure 3
8–BIT CRC CODE
48–BIT SERIAL NUMBER
8–BIT FAMILY CODE
(1CH = DS2422,
1DH = DS2423)
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
1–WIRE CRC GENERATOR
Figure 4
1ST
STAGE
2ND
STAGE
3RD
STAGE
4TH
STAGE
5TH
STAGE
6TH
STAGE
7TH
STAGE
8TH
STAGE
X
0
X
1
X
2
X
3
X
4
X
5
X
6
X
7
X
8
Polynomial = X
8
+ X
5
+ X
4
+ 1
XOR
XOR
XOR
INPUT
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參數(shù)描述
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