The DS1990A-F3+ is a serial number iButton in F3 iButton package. It is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through 1-wire protocol which requires only a single data lead and a ground return. It is factory lasered with a guaranteed unique 64bit 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 DS1990A to be used easily by human operators. Accessories enable DS1990A iButton to be mounted on almost any object, including containers, pallets and bags. It is used in access control, work-in-progress tracking, tool management and inventory control.
- Operating supply voltage range from 2.8V to 6V with -40°C to +85°C operating temperature
- Can be read in less than 5ms
- 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
- Durable stainless steel case engraved with registration number withstands harsh environments
- Self stick adhesive backing, latched by its flange or locked with a ring pressed onto its rim
嵌入式设计与开发
