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參數(shù)資料
| 型號： | DS1920-F5 |
| 英文描述： | Temperature iButton |
| 中文描述： | iButton的溫度 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大小： | 729K |
| 代理商： | DS1920-F5 |
DS1920
17 of 22
DS1920 MEMORY AND CONTROL FUNCTION COMMANDS
Table 2
INSTRUCTION
DESCRIPTION
TEMPERATURE CONVERSION COMMANDS
Initiates temperature
conversion
MEMORY COMMANDS
Reads bytes from scratchpad
and reads CRC byte.
Writes bytes into scratchpad
at addresses 2 and 3 (TH and
TL temperature triggers).
Copies Scratchpad into
nonvolatile memory
(addresses 2 and 3 only).
Recalls values stored in
nonvolatile memory into
scratchpad (temperature
triggers).
PROTOCOL
1-WIRE BUS
AFTER ISSUING
PROTOCOL
NOTES
Convert
Temperature
44H
strong pullup
1
Read Scratchpad
BEH
<read up to 9 data
bytes>
<write data into 2
bytes at addr. 2 and
addr. 3>
strong pullup
Write Scratchpad
4EH
Copy Scratchpad
48H
2
Recall
B8H
idle
NOTES:
1.
Temperature conversion takes up to 0.5 seconds. After receiving the Convert Temperature command,
the data line for the DS1920 must be held high for at least 0.5 seconds to provide power during the
conversion process. As such, no other activity may take place on the 1-Wire bus for at least this
period after a Convert Temperature command has been issued.
2.
After receiving the Copy Scratchpad command, the data line for the DS1920 must be held high for at
least 10 ms to provide power during the copy process. As such, no other activity may take place on
the 1-Wire bus for at least this period after a Copy Scratchpad command has been issued.
READ/WRITE TIMING DIAGRAM
Figure 11
Write-1 Time Slot
60
μ
s
≤
t
SLOT
< 120
μ
s
1
μ
s
≤
t
LOW1
< 15
μ
s
1
μ
s
≤
t
REC
<
∞
RESISTOR
MASTER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS9093F | Temperature iButton |
| DS1920 | Temperature iButton |
| DS1920-F3 | Temperature iButton |
| DS1921 | High-Resolution Thermochron iButton |
| DS1921H-F5 | High-Resolution Thermochron iButton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1920-F5+ | 功能描述:iButton Temperature 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 |
| DS1921 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Resolution Thermochron iButton |
| 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 |
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