KeyFeatures
• 4096 bits of read/write nonvolatile memory. • 256-bit scratchpad ensures integrity of data transfer. • Memory partitioned into 256-bit pages for packetizing data. • Data integrity assured with strict read/write protocols. • Operating temperature range from -40°C to +70°C. • Over 10 years of data retention. Common iButton Features
• Digital Identification and Information by Momentary Contact. • 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. • Chip-Based Data Carrier Compactly Stores Information. • Data Can be Accessed While Affixed to Object. • Button Shape is Self-Aligning with Cup-Shaped Probes. • Durable 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. • Meets UL#913 (4th Edit.). Intrinsically Safe Apparatus: Approved Under Entity Concept for Use in Class I, Division 1, Group A, B, C and D Locations (application pending).
The DS1993 iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining to the object to which the iButton is attached. Data is transferred serially through the 1-Wire protocol that requires only a single data lead and a ground return.
The scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the scratchpad where it can be read back. After the data has been verified, a copy scratchpad command transfers the data to memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS1993 to provide a guaranteed unique identity that allows for absolute traceability. The durable MicroCan package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS1993 to be easily used by human operators. Accessories permit the DS1993 to be mounted on almost any surface including plastic key fobs, photo-ID badges, and PC boards.
Applications Access control Work-in-progress tracking Electronic travel…
| KeyFeatures
• 4096 bits of read/write nonvolatile memory.
• 256-bit scratchpad ensures integrity of data transfer.
• Memory partitioned into 256-bit pages for packetizing data.
• Data integrity assured with strict read/write protocols.
• Operating temperature range from -40°C to +70°C.
• Over 10 years of data retention. | Common iButton Features
• Digital Identification and Information by Momentary Contact.
• 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.
• Chip-Based Data Carrier Compactly Stores Information.
• Data Can be Accessed While Affixed to Object.
• Button Shape is Self-Aligning with Cup-Shaped Probes.
• Durable 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.
• Meets UL#913 (4th Edit.). Intrinsically Safe Apparatus: Approved Under Entity Concept for Use in Class I, Division 1, Group A, B, C and D Locations (application pending). |
The DS1993 iButton is a rugged read/write data carrier that acts as a localized database, easily accessible with minimal hardware. The nonvolatile memory and optional timekeeping capability offer a simple solution to storing and retrieving vital information pertaining to the object to which the iButton is attached. Data is transferred serially through the 1-Wire protocol that requires only a single data lead and a ground return.
The scratchpad is an additional page that acts as a buffer when writing to memory. Data is first written to the scratchpad where it can be read back. After the data has been verified, a copy scratchpad command transfers the data to memory. This process ensures data integrity when modifying the memory. A 48-bit serial number is factory lasered into each DS1993 to provide a guaranteed unique identity that allows for absolute traceability. The durable MicroCan package is highly resistant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self-aligning with mating receptacles, allowing the DS1993 to be easily used by human operators. Accessories permit the DS1993 to be mounted on almost any surface including plastic key fobs, photo-ID badges, and PC boards.
Applications
- Access control
- Work-in-progress tracking
- Electronic travel…
