參數(shù)資料
型號(hào)： DS18B20Z/T&R
廠商： Maxim Integrated
文件頁(yè)數(shù)： 12/22頁(yè)
文件大?。?/td> 528K
描述： IC THERM MICROLAN PROG-RES 8SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
功能： 溫度計(jì)，恒溫計(jì)
傳感器類型： 內(nèi)部
感應(yīng)溫度： -55°C ~ 125°C
精確度： ±2°C（最小值）
拓?fù)洌?/td> 寄存器庫(kù)，變簽式暫存器
輸出類型： 1-Wire?
輸出警報(bào)： 是
輸出風(fēng)扇： 無(wú)
電源電壓： 3 V ~ 5.5 V
工作溫度： -55°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 帶卷 (TR)
DS18B20
 
12 of 22 
COPY SCRATCHPAD [48h] 
This command copies the contents of the scratchpad T
H
, T
L
 and configuration registers (bytes 2, 3 and 4)
to EEPROM. If the device is being used in parasite power mode, within 10祍 (max) after this command is
issued the master must enable a strong pullup on the 1-Wire bus for at least 10ms as described in the
Powering the DS18B20 section. 
RECALL E
2
 [B8h] 
This command recalls the alarm trigger values (T
H
 and T
L
) 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 DS18B20 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 DS18B20s on the
bus are using parasite power. During the read time slot, parasite powered DS18B20s will pull the bus
low, and externally powered DS18B20s will let the bus remain high. See the Powering the DS18B20
section for usage information for this command.
Table 3. DS18B20 Function Command Set 
COMMAND
DESCRIPTION
PROTOCOL
1-Wire BUS
ACTIVITYAFTER
COMMAND IS ISSUED
NOTES
TEMPERATURE CONVERSION COMMANDS
Convert T
Initiates temperature
conversion.
44h
DS18B20 transmits
conversion status to master
(not applicable for parasite-
powered DS18B20s).
1
MEMORY COMMANDS
Read
Scratch ad
Reads the entire scratchpad
includin   the CRC b te.
BEh
DS18B20 transmits up to 9
data b tes to master.
2
Write
Scratchpad
Writes data into scratchpad
bytes 2, 3, and 4 (T
H
, T
L
,
and configuration
registers).
4Eh
Master transmits 3 data bytes
to DS18B20.
3
Copy
Scratchpad
Copies T
H
, T
L
, and
configuration register data
from the scratchpad to
EEPROM.
48h
None
1
Recall E
2
 
Recalls T
H
, T
L
, and
configuration register data
from EEPROM to the
scratch ad.
B8h
DS18B20 transmits recall
status to master.
 
Read Power
Supply
Signals DS18B20 power
supply mode to the master.
B4h
DS18B20 transmits supply
status to master.
 
 
Note 1:     For parasite-powered DS18B20s, the master must enable a strong pullup on the 1-Wire bus during temperature 
n  r i n   n
i   fr m h    r   h
EEPR  M
h r
i i   m
k   l
rin   hi  im
2
The master can interru t the transmission of data at an time b issuin a reset.
All hr
m
ri  n   f r    r
i  i
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS18B20Z-W 制造商:Maxim Integrated Products 功能描述:
DS18S20 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
DS18S20/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN HI PREC TO-92
DS18S20/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
DS18S20+ 功能描述:板上安裝溫度傳感器 Prgmble Resolution 1-Wire Parasite Pwr 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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