參數(shù)資料
型號(hào)： DS1920
英文描述： Temperature iButton
文件頁(yè)數(shù)： 19/22頁(yè)
文件大小： 729K
代理商： DS1920
DS1920
19 of 22
MEMORY FUNCTION EXAMPLE
Table 3
Example: Bus Master initiates temperature conversion, then reads temperature
.
MASTER MODE
TX
RX
TX
TX
TX
TX
DATA (LSB FIRST)
Reset
Presence
55H
<64-bit ROM code>
44H
<DATA LINE HIGH>
COMMENTS
Reset pulse( 480-960
μ
s)
Presence pulse
Issue "Match ROM" command
Issue address for DS1920
Issue "Convert Temperature" command
Data line is held high for at least 0.5 seconds by bus
master to allow conversion to complete.
Reset pulse
Presence pulse
Issue "Match ROM" command
Issue address for DS1920
Issue "Read Scratchpad" command.
Read entire scratchpad plus CRC; the master now
recalculates the CRC of the eight data bytes received
from the scratchpad, compares the CRC calculated and
the CRC read. If they match, the master continues; if
not, this read operation is repeated.
Reset pulse
Presence pulse, done.
TX
RX
TX
TX
TX
RX
Reset
Presence
55H
<64-bit ROM code>
BEH
<9 data bytes>
TX
RX
Reset
Presence
相關(guān)PDF資料
PDF描述
DS1920-F3 Temperature iButton
DS1921 High-Resolution Thermochron iButton
DS1921H-F5 High-Resolution Thermochron iButton
DS1921Z-F5 High-Resolution Thermochron iButton
DS1963L-F5 NVRAM (Battery Based)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1920+F5 制造商:Maxim Integrated Products 功能描述:TEMP IBTN 2PIN F5 MICROCAN - Rail/Tube
DS1920-F3 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Temperature iButton
DS1920-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
DS1920-F5+ 功能描述:iButton Temperature 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
DS1921 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Resolution Thermochron iButton
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