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參數資料
| 型號： | DS18B20Z/T&R |
| 廠商： | Maxim Integrated |
| 文件頁數： | 18/22頁 |
| 文件大小： | 528K |
| 描述： | IC THERM MICROLAN PROG-RES 8SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±2°C（最小值） |
| 拓撲： | 寄存器庫，變簽式暫存器 |
| 輸出類型： | 1-Wire? |
| 輸出警報： | 是 |
| 輸出風扇： | 無 |
| 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） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
DS18B20
18 of 22
DS18B20 OPERATION EXAMPLE 1
In this example there are multiple DS18B20s on the bus and they are using parasite power. The bus
master initiates a temperature conversion in a specific DS18B20 and then reads its scratchpad and
recalculates the CRC to verify the data.
MA TER M DE
DATA L B FIR T
MME T
Tx
Reset
Master issues reset ulse.
Rx
Pr n
D 1 B2 r
n i h r n
l
Tx
55h
Master issues Match ROM command.
Tx
64-bit ROM code
Master sends DS18B20 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 (t
CONV
).
Tx
Reset
Master issues reset ulse.
Rx
Presence
DS18B20s res ond with resence ulse.
Tx
55h
Master issues Match ROM command.
Tx
64-bit ROM code
Master sends DS18B20 ROM code.
Tx
BEh
M r i
R
r h
mm n
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 o eration is re eated.
DS18B20 OPERATION EXAMPLE 2
In this example there is only one DS18B20 on the bus and it is using parasite power. The master writes to
the T
H
, T
L
, and configuration registers in the DS18B20 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 ulse.
Rx
Presence
DS18B20 res onds with resence ulse.
Tx
h
M r i
ki R M mm n
Tx
4Eh
Master issues Write Scratch ad command.
Tx
3 data b tes
Master sends three data b tes to scratch ad T
H
T
L
and confi .
Tx
Reset
Master issues reset ulse.
Rx
Presence
DS18B20 res onds with resence ulse.
Tx
CCh
Master issues Ski ROM command.
Tx
BEh
Master issues Read Scratch ad 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
o eration is re eated.
Tx
Reset
Master issues reset ulse.
Rx
Presence
DS18B20 res onds with resence ulse.
Tx
h
M r i
ki R M mm n
Tx
48h
Master issues Co Scratch ad command.
Tx
DQ line held high by
r n
ll
Master applies strong pullup to DQ for at least 10ms while copy
r i n i in r r
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| 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 |
| 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 |
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