Maxim DS1923-F5#W

NVSRAM（非易失性 SRAM）512B

Overview

iButton DESCRIPTIONThe DS1923-F5 temperature/humidity logger iButton is a rugged, self-sufficient system that measures temperature and/or humidity and records the result in a protected memory section. The recording is done at a user-defined rate. A total of 8192 8-bit readings or 4096 16-bit readings taken at equidistant intervals ranging from 1s to 273hrs can be stored. In addition to this, there are 512 bytes of SRAM for storing application-specific information and 64 bytes for calibration data.

SPECIAL ■ Digital Hygrometer Measures Humidity with 8-Bit (0.6%RH) or 12-Bit (0.04%RH) Resolution■ Operating Range: -20 to +85°C; 0 to 100%RH (see Safe Operating Range)■ Automatically Wakes Up, Measures Temperature and/or Humidity and Stores Values in 8kB of Datalog Memory in 8- or 16-Bit Format■ Digital Thermometer Measures Temperature with 8-Bit (0.5°C) or 11-Bit (0.0625°C) Resolution■ Temperature Accuracy Better than ±0.5°C from -10°C to +65°C with Software Correction■ Built-in Humidity Sensor for Simultaneous Temperature and Humidity Logging■ Capacitive Polymer Humidity-Sensing Element■ Hydrophobic Filter Protects Sensor Against Dust, Dirt, Water, and Contaminants■ Sampling Rate from 1s up to 273hrs■ Programmable Recording Start Delay After Elapsed Time or Upon a Temperature Alarm Trip Point■ Programmable High and Low Trip Points for Temperature and Humidity Alarms■ Quick Access to Alarmed Devices Through 1-Wire® Conditional Search Function■ 512 Bytes of General-Purpose Memory Plus 64 Bytes of Calibration Memory■ Two-Level Password Protection of All Memory and Configuration Registers■ Communicates to Host with a Single Digital Signal at Up to 15.4kbps at Standard Speed or Up to 125kbps in Overdrive Mode Using 1-Wire Protocol■ Individually Calibrated in a NIST-Traceable Chamber■ Calibration Coefficients for Temperature and Humidity Factory Programmed into Nonvolatile (NV) Memory

Features