DS28CM00:I²C/SMBus Silicon Serial Number

Unique 64-bit factory lasered in each part. Perfect low-cost solution for embedded applications requiring an electronic serial number.

The DS28CM00 is a low-cost, electronic registration number to provide an absolutely unique identity that can be determined with the industry standard I²C and SMBus™ interface. The registration number is a factory-lasered, 64-bit ROM that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit family code (70h). In SMBus mode, the DS28CM00 resets its communication interface if it detects a bus fault condition.

Key Features
  • Unique, Factory-Lasered and Tested 64-bit Registration Number (8-bit Family Code + 48-bit Serial Number + 8-bit CRC)
  • SMBus-Compatible I²C Serial Interface
  • Supports 100kHz and 400kHz Communication Speeds
  • 5V Tolerant Interface Pins
  • Operating Range: 1.8V ±10% to 5V ±5%, -40°C to +85°C
  • 5-Pin SOT23 Package
DS28CM00: Typical Operating Circuit
DS28CM00: Typical Operating Circuit
  • Accessory and Peripheral Identification
  • Equipment Registration and License Management
  • Network Node Identification
  • Printed Circuit Board Unique Serialization
titleDownload file
DS28CM00 Data SheetDS28CM00.pdf
Part NumberApplicationsMemory TypeMemory SizeBus TypeVSUPPLY
minmaxSee Notes
DS28CM00PCB ID and AuthenticationROM64bit x 1I2C1.625.25SOT/5$0.70 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • DS2411:Silicon Serial Number with VCC Input
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
DS28CM00R-A00+TActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
DS28CM00R-A00+UActiveSOT,;5 pin;9 mm²-40°C to +85°CLead Free
DS28CM00.pdf DS28CM00
DS28CM00_cn.pdf DS28CM00
DS28CM00.pdf DS28CM00
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DS28CM00_cn.pdf DS28CM00