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  Products   Accessories   [ AOC-IButton68 ]
Common Features
  • Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute traceability because no two parts are alike
  • Multidrop controller for 1-Wire net
  • Digital identification and information by momentary contact
  • Chip-based data carrier compactly stores information
  • Data can be accessed while affixed to object
  • Button shape is self-aligning with cup-shaped probes
  • Stainless steel case engraved with registration number withstands harsh environments
  • Easily affixed with self-stick adhesive backing, latched by its flange, or locked with a ring pressed onto its rim
  • Presence detector acknowledges when reader first applies voltage

Key Specifications
Part Number
Memory Type
Memory Size
  • 1K bits
  • 512-bit SHA-1 Engine
  • Five General-Purpose Read/Write Registers
  • Monetary
  • One 64-bit Write-Only Secret
  • Secure
  • Secure Hash Standard
  • Unique 64-bit Serial Number
Key Features
  • 1128 bits of 5V EEPROM memory partitioned into four pages of 256 bits, a 64-bit write-only secret and up to five general purpose read/write registers
  • Write access requires knowledge of the secret and the capability of computing and transmitting a 160-bit MAC as authorization
  • Secret and data memory can be write-protected (all or page 0 only) or put in EPROM-emulation mode ("write to 0", page 1)
  • On-chip 512-bit SHA-1 engine to compute 160-bit MAC and to generate secrets
  • Reads and writes over a wide voltage range of 2.8V to 5.25V from -40°C to +85°C
  • Communicates to host with a single digital signal at 14.1kb per second using 1-Wire protocol
  • On-chip 16-bit CRC generator for safeguarding data transfers
  • Overdrive mode boosts communication speed to 125kbps
  • Operating temperature range from -40°C to +85°C
  • Minimum 10 years of data retention at 85°C
Information in this document is subject to change without notice.
Other products and companies referred to herein are trademarks or registered trademarks of their respective companies or mark holders.