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參數(shù)資料
| 型號： | DS1921H-F5 |
| 英文描述： | High-Resolution Thermochron iButton |
| 中文描述： | 高分辨率Thermochron iButton的 |
| 文件頁數(shù)： | 39/44頁 |
| 文件大?。?/td> | 271K |
| 代理商： | DS1921H-F5 |
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DS1921H/Z
39 of 44
STEP 4
In this example, the temperature alarms are set to 0
°
C for the low temperature threshold and 10
°
C for the
high temperature threshold, assuming it is a DS1921Z device. The sample rate is once every 10 minutes,
allowing the mission to last up to 14 days. This results in the following data to be written to the special
function registers:
Address:
20Bh
20Ch
20Dh
Data:
2Ch
7Ch
0Ah
With only a single DS1921H/Z connected to the bus master, the communication of step 4 is as follows:
MASTER MODE
DATA (LSB FIRST)
TX
(Reset)
RX
(Presence)
TX
CCh
TX
0Fh
TX
0Bh
TX
02h
TX
<3 data bytes>
TX
(Reset)
RX
(Presence)
TX
CCh
TX
AAh
RX
0Bh
RX
02h
RX
0Dh
RX
<3 data bytes>
TX
(Reset)
RX
(Presence)
TX
CCh
TX
55h
TX
0Bh
TX
02h
TX
0Dh
TX
(Reset)
RX
(Presence)
COMMENTS
Reset pulse (480
μ
s to 960
μ
s)
Presence pulse
Issue Skip ROM command
Issue Write Scratchpad command
TA1, beginning offset = 0Bh
TA2, address = 020Bh
Write 3 bytes of data to scratchpad
Reset pulse
Presence pulse
Issue Skip ROM command
Issue Read Scratchpad command
Read TA1, beginning offset = 0Bh
Read TA2, address = 020Bh
Read E/S, ending offset = 0Dh, flags = 0h
Read scratchpad data and verify
Reset pulse
Presence pulse
Issue Skip ROM command
Issue Copy Scratchpad command
TA1
TA2
(AUTHORIZATION CODE)
E/S
Reset pulse
Presence pulse
If step 4 was successful, the MIP bit in the Status Register will be 1, the MEMCLR bit will be 0, and the
mission start delay will be counting down.
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PDF描述 |
|---|---|
| DS1921Z-F5 | High-Resolution Thermochron iButton |
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| DS1963S | SHA iButton |
| DS1971 | 256-Bit EEPROM iButton |
| DS1973 | 4-kbit EEPROM iButton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1921H-F5# | 功能描述:iButton Thermochron High Res iButton RoHS:否 存儲類型:SRAM 存儲容量: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 |
| DS1921H-F5/A1C | 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量: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 |
| DS1921H-F5+A1C | 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量: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 |
| DS1921H-F50 | 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量: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 |
| DS1921K | 功能描述:存儲器 IC 開發(fā)工具 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Reference Boards 工具用于評估:M24LR64-R 存儲容量:64 kbit 存儲類型:EEPROM 工作電源電壓:1.8 V to 5.5 V |
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