TM1990A - F5 Rfid Smart Card ibutton for access control / Timepilot Tracking
The TM1990A is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire® protocol, which requires only a single data lead and a ground return. Every TM1990A guaranteed unique 64-bit registration number that allows for absolute traceability. The durable stainless-steel iButton 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 TM1990A to be used easily by human operators.
Key Features
| Failure Rate | 1 /100,000 times ( used properly) |
| Original Serial Number | 64 bits |
| Security | 64 bits encrypt passwords |
| Memory Capacity | 8 Kbits RAM |
| Read-Write features | read, write and encrypt |
| Read-Write Endurance | > 1.5 billion |
| Working Temperature | -40 ºC~+85 ºC |
| Read Endurance | > 350 thousand times |
| Working Time | >20 years |
| Size | φ16.25mm×5.89mm |
| Unit Weight | 0.05kg |
Common iButton Features
Unique 64-Bit Registration Number Ensures Error-Free Device Selection and Absolute Traceability Because No Two Parts are Alike
Built-In Multidrop Controller for 1-Wire Net
Digital Identification by Momentary Contact
Data Can Be Accessed While Affixed to Object
Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps
Button Shape is Self-Aligning with Cup-Shaped Probes
Durable Stainless-Steel Case
Easily Affixed with Self-Stick Adhesive Backing, Latched by its Flange, or Locked with a Ring Pressed Onto its Rim
Applications/Uses
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