The DS2422 temperature/data logger combines the core functions of a fully featured data logger in a single chip. It includes a temperature sensor, real-time clock (RTC), memory, 1-Wire& interface, and serial interface for an analog-to-digital converter (ADC), as well as control circuitry for a charge pump. The ADC and the charge pump are peripherals that can be added to build application-specific data loggers. Without an external ADC, the DS2422 functions as a temperature logger only. It measures the temperature and/or reads the ADC at a user-defined rate. Additionally, the DS2422 can store 8192 8-bit readings or 4096 16-bit readings taken at equidistant intervals ranging from 1 second up to 273 hours.
주요기능
애플리케이션/용도
Automatically Wakes Up, Measures Temperature and/or Reads an External ADC and Stores Values in 8KB of Datalog Memory in 8 or 16-Bit Format
On-Chip Direct-to-Digital Temperature Converter with 8-Bit (0.5°C) or 11-Bit (0.0625°C) Resolution
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 Data 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
Unique Factory-Lasered 64-Bit Registration Number Assures Error-Free Device Selection and Absolute Part Identity
Built-in Multidrop Controller Ensures Compatibility with Other Dallas Semiconductor 1-Wire Net Products
Directly Connects to a Single Port Pin of a Microprocessor and Communicates at up to 15.4kbps at Standard Speed or up to 125kbps in Overdrive Mode
-40°C to +85°C Operating Range
2.8V to 3.6V Single-Supply Battery Operation
Low Power (1.2µA Standby, 350µA Active)
데이터 로깅 (외장 ADC 및 차지 펌프 포함) 소자 DS2422S는 압력 모니터링, 조명 센서 모니터링, 로깅 서모커플 온도와 같은 여러 데이터 로깅 기능을 수행할 수 있다.
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