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
AOC-IBUTTON68
Memory Type
EEPROM
Memory Size
1K bits
Features
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
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