DS1921G存儲卡模塊的專用規(guī)格書PDF中文資料

General Description

The DS1921G Thermochron?iButton?is a rugged, selfsufficient system that measures temperature and records

the result in a protected memory section. The recording is done at a user-defined rate, both as a direct storage of temperature values as well as in the form of a histogram.

Features

?Digital Thermometer Measures Temperature in 0.5°C Increments

?Accuracy ±1°C from -30°C to +70°C (See the Electrical Characteristicsfor Accuracy Specification)

?Built-In Real-Time Clock (RTC) and Timer Has Accuracy of ±2 Minutes per Month from 0°C to +45°C

?Water Resistant or Waterproof if Placed Inside DS9107 iButton Capsule (Exceeds Water Resistant 3 ATM Requirements)

?Automatically Wakes Up and Measures Temperature at User-Programmable Intervals from 1 Minute to 255 Minutes

?Logs Consecutive Temperature Measurements in 2KB of Data-Log Memory

?Records a Long-Term Temperature Histogram with 2.0°C Resolution

?Programmable Temperature High and Temperature Low Alarm Trip Points

?Records Up to 24 Timestamps and Durations When Temperature Leaves the Range Specified by the Trip Points

?512 Bytes of General-Purpose Battery-Backed SRAM

?Communicates to Host with a Single Digital Signal at 15.4kbps or 125kbps Using 1-Wire Protocol

Applications

Temperature Logging in Cold Chain, Food Safety, Pharmaceutical, and Medical Products