Digital Thermometer and Memory


The DS1624 consists of two separate functional units: a 256-byte nonvolatile E2 memory and a direct-to-digital temperature sensor.

The nonvolatile memory is made up of 256 bytes of E2 memory. This memory can be used to store any type of information the user wishes. These memory locations are accessed through the 2-wire serial bus.

The direct-to-digital temperature sensor allows the DS1624 to measure the ambient temperature and report the temperature in a 12-bit word with 0.0625°C resolution. The temperature sensor and its related registers are accessed through the 2-wire serial interface. Figure 1 in the full data sheet shows a block diagram of the DS1624.

DS1624: Block Diagram DS1624: Block Diagram Enlarge+

Key Features

  • Reduces Component Count with Integrated Temperature Sensor and Nonvolatile E2 Memory
    • Measures Temperatures from -55°C to +125°C in 0.0625°C Increments
    • ±0.5°C Accuracy from 0°C to 70°C
    • 256 Bytes of E2 Memory for Storing Information Such as Frequency Compensation Coefficients
    • No External Components
  • Easy-to-Use 2-Wire Serial Interface
    • Temperature is Read as a 12-Bit Value (2-Byte Transfer)
  • Available in 8-Pin SO and DIP Packages
Part Number Sensor Type Functions Interface Accuracy
Parasite Pwr. Temp. Resolution
Multi Droppable Oper. Temp.
Package/Pins Budgetary
See Notes
DS1624  Local Memory 2-Wire/I2C/SMBus 0.5 No 12 Yes -55 to +125
$3.86 @1k
See All Temperature Sensors (111)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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