資料來源:https://www.sparkfun.com/products/245
This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number etched into it - allows for a huge number of sensors to be used on one data bus. This is a wonderful part that is the corner stone of many data-logging and temperature control projects.
Features:
- Unique 1-Wire® interface requires only one port pin for communication
- Each device has a unique 64-bit serial code stored in an onboard ROM
- Multidrop capability simplifies distributed temperature sensing applications
- Requires no external components
- Can be powered from data line. Power supply range is 3.0V to 5.5V
- Measures temperatures from –55°C to +125°C (–67°F to +257°F)
- ±0.5°C accuracy from –10°C to +85°C
- Thermometer resolution is user-selectable from 9 to 12 bits
- Converts temperature to 12-bit digital word in 750ms (max.)
- User-definable nonvolatile (NV) alarm settings
- Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
- Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system
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這是美信IC最新DS18B20 1-Wire數字溫度傳感器。報告攝氏度為9至12位的精度,-55℃至125℃(+/- 0.5℃)。每個傳感器都有蝕刻成一個唯一的64位序列號 - 允許將一個數據總線上使用的傳感器數量巨大。這是一個奇妙之處是許多數據記錄和溫度控制項目的基石。
特徵:
- 獨特的1-Wire®接口需要通信僅需一個端口引腳
- 每個設備具有存儲在板載ROM中的唯一的64位的串行代碼
- 多節點能力簡化分佈式溫度檢測應用
- 無需外部組件
- 可以從數據線供電。電源電壓範圍為3.0V至5.5V
- 從-55°C的措施溫度+ 125°C(-67°F至+ 257°F)
- -10±0.5°C的精度°C至+ 85°C
- 溫度計的分辨率為9〜12位用戶可選
- 轉換在750ms之間溫度到12位的數字字(最大)
- 用戶可定義的非易失(NV)報警設置
- 報警搜索命令識別並解決設備的溫度的設定範圍(溫度報警條件)之外
- 應用範圍包括恆溫控制,工業系統,消費產品,溫度計或任何熱敏感系統
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替代: SEN-08366