參數(shù)資料
型號(hào)： DS1822/T&R
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： Switch/Digital Output Temperature Sensor
英文描述： DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
封裝： TO92-3
文件頁(yè)數(shù)： 4/21頁(yè)
文件大?。?/td> 222K
代理商： DS1822/T&R
DS1822
12 of 21
issued the master must enable a strong pullup on the 1-Wire bus for at least 10ms as described in the
POWERING THE DS1822 section.
RECALL E
2 [B8h]
This command recalls the alarm trigger values (TH and TL) and configuration data from EEPROM and
places the data in bytes 2, 3, and 4, respectively, in the scratchpad memory. The master device can issue
read time slots following the Recall E
2 command and the DS1822 will indicate the status of the recall by
transmitting 0 while the recall is in progress and 1 when the recall is done. The recall operation happens
automatically at power-up, so valid data is available in the scratchpad as soon as power is applied to the
device.
READ POWER SUPPLY [B4h]
The master device issues this command followed by a read time slot to determine if any DS1822s on the
bus are using parasite power. During the read time slot, parasite powered DS1822s will pull the bus low,
and externally powered DS1822s will let the bus remain high. Refer to the POWERING THE DS1822
section for usage information for this command.
DS1822 FUNCTION COMMAND SET Table 4
Command
Description
Protocol
1-Wire Bus Activity
After Command is Issued
Notes
TEMPERATURE CONVERSION COMMANDS
Convert T
Initiates temperature
conversion.
44h
DS1822 transmits conversion
status to master (not applicable
for parasite-powered DS1822s).
1
MEMORY COMMANDS
Read Scratchpad
Reads the entire scratchpad
including the CRC byte.
BEh
DS1822 transmits up to 9 data
bytes to master.
2
Write Scratchpad
Writes data into scratchpad
bytes 2, 3, and 4 (TH, TL,
and configuration registers).
4Eh
Master transmits 3 data bytes to
DS1822.
3
Copy Scratchpad
Copies TH, TL, and
configuration register data
from the scratchpad to
EEPROM.
48h
None
1
Recall E
2
Recalls TH, TL, and
configuration register data
from EEPROM to the
scratchpad.
B8h
DS1822 transmits recall status to
master.
Read Power
Supply
Signals DS1822 power
supply mode to the master.
B4h
DS1822 transmits supply status
to master.
NOTES:
1. For parasite-powered DS1822s, the master must enable a strong pullup on the 1-Wire bus during
temperature conversions and copies from the scratchpad to EEPROM. No other bus activity may take
place during this time.
2.
The master can interrupt the transmission of data at any time by issuing a reset.
3.
All three bytes must be written before a reset is issued.
相關(guān)PDF資料
PDF描述
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
DS18B20-PAR/T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, ROUND, THROUGH HOLE MOUNT
DS18B20-PAR DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.50Cel, ROUND, THROUGH HOLE MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1822-W 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC - Rail/Tube
DS1822Z 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(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS1822Z/T 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Econo 1-Wire Digital Thermometer
DS1822Z/T&R 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG 8-SOIC
DS1822Z/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(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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