Overview

Features and Benefits

  • 1024 Bits of EEPROM Memory Partitioned Into Four Pages of 256 Bits
  • Individual Memory Pages Can Be Permanently Write Protected or Put in EPROM-Emulation Mode ("Write to 0")
  • Switchpoint Hysteresis and Filtering to Optimize Performance in the Presence of Noise
  • IEC 1000-4-2 Level 4 ESD Protection (+8kV Contact, +15kV Air, Typ)
  • Reads and Writes Over a 4.5V to 5.25V Voltage Range from -40°C to +125°C
  • Communicates to Host with a Single Digital Signal at 15.4kbps Using 1-Wire Protocol
  • Meets AEC-Q100 Grade 1 Qualification Requirements
  • Also Available as Standard Version for Industrial Temperature Range (DS2431)

Product Details

The DS2431-A1 is an AEC-Q100 Grade 1 qualified version of the DS2431. The logical behavior of both versions is identical. The DS2431-A1 is a 1024-bit, 1-Wire® EEPROM chip organized as four memory pages of 256 bits each. Data is written to an 8-byte scratchpad, verified, and then copied to the EEPROM memory. As a special feature, the four memory pages can individually be write protected or put in EPROM-emulation mode, where bits can only be changed from a 1 to a 0 state. The DS2431-A1 communicates over the single-conductor 1-Wire bus. The communication follows the standard 1-Wire protocol. Each device has its own unalterable and unique 64-bit ROM registration number that is factory lasered into the chip. The registration number is used to address the device in a multidrop 1-Wire net environment.

Applications

  • Accessory/PCB Identification
  • Automotive Cable Assembly Identification
  • Automotive Sensor Identification and Calibration Data Storage

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations

Software Development

Product Recommendations

DS2431-A1 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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