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DS1921H/Z
HIERARCHICAL STRUCTURE FOR 1-Wire PROTOCOL Figure 2
Bus
Master
Command
Level:
1-Wire net
DS1921
Available
Commands:
Other
Devices
Cmd. Data Field
Codes: Affected:
1-Wire ROM Function
Commands
DS1921-Specific
Memory/Control
Function Commands
Read ROM
Match ROM
Search ROM
Skip ROM
Overdrive Skip
Overdrive Match
Conditional Search
ROM
Write Scratchpad
Read Scratchpad
Copy Scratchpad
Read Memory
Read Memory w/CRC
Clear Memory
Convert Temperature
33h
55h
F0h
CCh
3Ch
69h
ECh
0Fh
AAh
55h
F0h
A5h
3Ch
44h
64-bit Reg. #
64-bit Reg. #
64-bit Reg. #
N/A
OD-Flag
64-bit Reg. #, OD-Flag
64-bit Reg. #, Cond. Search settings,
device status
256-bit scratchpad, flags
256-bit scratchpad
4096-bit SRAM, registers, flags
All memory
All memory
Mission Time Stamp, Mission Samples
Counter, Start Delay, Sample
Rate, Alarm Time Stamps and
Durations, Histogram Memory
Memory address 211h
64-BIT LASERED ROM Figure 3
MSB
LSB
8-Bit
CRC Code
12-Bit Temperature
Range Code
36-Bit Serial Number
8-Bit Family
Code (21h)
MSB
LSB
MSB
LSB
MSB
LSB
MSB
LSB
DEVICE
TEMP.
RANGE (°C)
RESOLUTION
( ° C)
TEMP. RANGE CODE
HEX.
EQUIVALENT
DS1921H-F5
DS1921Z-F5
+15 to +46
-5 to +26
0.125
0.125
0100
0011
1111
1011
0010
0010
4F2
3B2
4 of 45
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相关PDF资料
DS1921K#
KIT IBUTTON THERMOCHRON
DS1922E-F5#
IBUTTON TEMP LOGGER 4KBit F5
DS1922L-F5#
IBUTTON TEMP LOGGER
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相关代理商/技术参数
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