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參數(shù)資料
| 型號(hào)： | DS1921 |
| 英文描述： | High-Resolution Thermochron iButton |
| 中文描述： | 高分辨率Thermochron iButton的 |
| 文件頁數(shù)： | 33/44頁 |
| 文件大小： | 271K |
| 代理商： | DS1921 |
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DS1921H/Z
33 of 44
CRC-16 HARDWARE DESCRIPTION AND POLYNOMIAL
Figure 16
Polynomial = X
16
+ X
15
+ X
2
+ 1
X
0
X
1
X
2
X
3
X
4
X
5
X
6
X
7
X
8
X
9
X
10
X
11
X
12
X
13
X
14
X
15
X
16
1
st
STAGE
2
nd
STAGE
3
rd
STAGE
4
th
STAGE
6
th
STAGE
5
th
STAGE
7
th
STAGE
8
th
STAGE
9
th
STAGE
10
th
STAGE
11
th
STAGE
12
th
STAGE
13
th
STAGE
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th
STAGE
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th
STAGE
16
th
STAGE
INPUT DATA
CRC
OUTPUT
Command-Specific 1-Wire Communication Protocol — Legend
Symbol
RST
PD
Select
WS
RS
CPS
RM
RMC
CM
CT
TA
TA-E/S
<data to EOS>
<data to EOP>
<data to EOM>
<00 to EOP>
<32 bytes>
<data>
CRC16\
FF loop
AA loop
00 loop
Description
1-Wire Reset Pulse generated by master
1-Wire Presence Pulse generated by slave
Command and data to satisfy the ROM function protocol (Skip ROM, Search ROM, etc.)
Command "Write Scratchpad"
Command "Read Scratchpad"
Command "Copy Scratchpad"
Command "Read Memory"
Command "Read Memory with CRC"
Command "Clear Memory"
Command "Convert Temperature"
Target Address TA1, TA2
Target Address TA1, TA2 with E/S byte
Transfer of as many data bytes as are needed to reach the scratchpad offset 1Fh
Transfer of as many data bytes as are needed to reach the end of a memory page
Transfer of as many data bytes as are needed to reach the end of the datalog memory
Transfer of as many 00h bytes as are needed to reach a memory page boundary
Transfer of 32 bytes
Transfer of an undetermined amount of data
Transfer of an inverted CRC16
Indefinite loop where the master reads FFh bytes
Indefinite loop where the master reads AAh bytes
Indefinite loop where the master reads 00h bytes
相關(guān)PDF資料 |
PDF描述 |
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| DS1921H-F5 | High-Resolution Thermochron iButton |
| DS1921Z-F5 | High-Resolution Thermochron iButton |
| DS1963L-F5 | NVRAM (Battery Based) |
| DS1963S | SHA iButton |
| DS1971 | 256-Bit EEPROM iButton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1921G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Thermochron iButton |
| DS1921G_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Logs Up to 2048 Consecutive Temperature Thermochron iButton |
| DS1921G_1109 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Thermochron iButton |
| DS1921G_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Thermochron iButton |
| DS1921G-F5 | 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated |
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