參數資料
型號： DS1822-PAR
廠商： DALLAS SEMICONDUCTOR
元件分類： Switch/Digital Output Temperature Sensor
英文描述： DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.20Cel, ROUND, THROUGH HOLE MOUNT
封裝： TO-92, 3 PIN
文件頁數： 8/19頁
文件大小： 138K
代理商： DS1822-PAR
DS1822-PAR
16 of 19
DS1822-PAR OPERATION EXAMPLE 1
In this example there are multiple DS1822-PARs on the bus. The bus master initiates a temperature
conversion in a specific DS1822-PAR and then reads its scratchpad and recalculates the CRC to verify
the data.
MASTER MODE
DATA (LSB FIRST)
COMMENTS
TX
Reset
Master issues reset pulse.
RX
Presence
DS1822-PARs respond with presence pulse.
TX
55h
Master issues Match ROM command.
TX
64-bit ROM code
Master sends DS1822-PAR ROM code.
TX
44h
Master issues Convert T command.
TX
DQ line held high by
strong pullup
Master applies strong pullup to DQ for the duration of the
conversion (tconv).
TX
Reset
Master issues reset pulse.
RX
Presence
DS1822-PARs respond with presence pulse.
TX
55h
Master issues Match ROM command.
TX
64-bit ROM code
Master sends DS1822-PAR ROM code.
TX
BEh
Master issues Read Scratchpad command.
RX
9 data bytes
Master reads entire scratchpad including CRC. The master
then recalculates the CRC of the first eight data bytes from the
scratchpad and compares the calculated CRC with the read
CRC (byte 9). If they match, the master continues; if not, the
read operation is repeated.
DS1822-PAR OPERATION EXAMPLE 2
In this example there is only one DS1822-PAR on the bus. The master writes to the TH, TL, and
configuration registers in the DS1822-PAR scratchpad and then reads the scratchpad and recalculates the
CRC to verify the data. The master then copies the scratchpad contents to EEPROM.
MASTER MODE
DATA (LSB FIRST)
COMMENTS
TX
Reset
Master issues reset pulse.
RX
Presence
DS1822-PAR responds with presence pulse.
TX
CCh
Master issues Skip ROM command.
TX
4Eh
Master issues Write Scratchpad command.
TX
3 data bytes
Master sends three data bytes to scratchpad (TH, TL, and config).
TX
Reset
Master issues reset pulse.
RX
Presence
DS1822-PAR responds with presence pulse.
TX
CCh
Master issues Skip ROM command.
TX
BEh
Master issues Read Scratchpad command.
RX
9 data bytes
Master reads entire scratchpad including CRC. The master then
recalculates the CRC of the first eight data bytes from the
scratchpad and compares the calculated CRC with the read CRC
(byte 9). If they match, the master continues; if not, the read
operation is repeated.
TX
Reset
Master issues reset pulse.
RX
Presence
DS1822-PAR responds with presence pulse.
TX
CCh
Master issues Skip ROM command.
TX
48h
Master issues Copy Scratchpad command.
TX
DQ line held high by
strong pullup
Master applies strong pullup to DQ for at least 10 ms while copy
operation is in progress.
相關PDF資料
PDF描述
DS1822Z/T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
DS1822/T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
DS1822 DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
DS1822+T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
DS1822Z DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
相關代理商/技術參數
參數描述
DS1822-PAR/T&R 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
DS1822-PAR_07 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Econo 1-Wire Parasite-Power Digital Thermometer
DS1822-PAR+T&R 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 1-WIRE 3PIN TO-92 - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG TO-92 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors 1-Wire Digital Thermometer
DS1822-PAR+T&R 功能描述:板上安裝溫度傳感器 1-Wire Digital Thermometer RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
DS-18-22-RS 制造商:TE Connectivity 功能描述:Red sealed splice terminal,0.5-1.5sq.mm
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