SL900A
The EM Microelectronic SL900A is an UHF 860–960 MHz RFID tag IC, with 3648 bits total (448 bytes user memory, 64-bit EPC, 64-bit TID), operating at 860–960 MHz UHF, under EPC Class 3 EPC Gen2 (ISO/IEC 18000-63).
EPC Class 3 semi-passive UHF RFID IC with integrated sensors for temperature logging and monitoring
Full Specifications
| Manufacturer | EM Microelectronic |
|---|---|
| Frequency Category | UHF 860–960 MHz |
| Frequency | 860–960 MHz UHF |
| Protocol | EPC Class 3, EPC Gen2 (ISO/IEC 18000-63) |
| Memory | 3648 bits total (448 bytes user memory, 64-bit EPC, 64-bit TID) |
| Interface | RF (contactless), I2C for sensor configuration |
| Temperature Range | -40°C to +85°C operating, -40°C to +125°C storage |
| Form Factor | Die/wafer for inlay integration |
| Security | 32-bit access password, 32-bit kill password |
Engineering Brief
The SL900A is an EPC Class 3 semi-passive UHF RFID IC featuring an integrated temperature sensor with programmable logging capabilities for cold chain applications. It operates with battery assistance to enable extended read range and autonomous temperature monitoring over time, storing timestamped measurements in onboard memory. The chip combines standard EPC Gen2 air interface compatibility with advanced sensor functions, making it ideal for pharmaceutical, food, and medical logistics requiring temperature documentation throughout the supply chain.
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Typical Applications
Standards & Compliance
Frequently Asked Questions
What is the SL900A RFID chip used for?
The SL900A is a semi-passive UHF RFID chip designed for cold chain monitoring in pharmaceutical, food, and medical logistics. It features an integrated temperature sensor with programmable logging capabilities to record timestamped temperature measurements throughout the supply chain.
Does the SL900A require a battery?
Yes, the SL900A is a semi-passive chip that requires battery assistance to enable extended read range and autonomous temperature logging over time. The battery powers the sensor and logging functions while RF energy is used for communication.
How much memory does the EM SL900A have?
The SL900A has 3648 bits total memory, including 448 bytes of user memory for temperature logs and application data, a 64-bit EPC identifier, and a 64-bit TID (Tag ID).
Is the SL900A compatible with standard UHF RFID readers?
Yes, the SL900A supports the standard EPC Gen2 (ISO/IEC 18000-63) air interface protocol, making it compatible with existing UHF RFID infrastructure. It is classified as EPC Class 3, which adds sensor and battery-assisted functionality to the base Gen2 specification.
Can I configure the SL900A temperature sensor remotely?
The SL900A can be configured via both RF commands and an I2C interface. The I2C interface is typically used during manufacturing or initialization for detailed sensor setup, while RF commands allow remote configuration and data retrieval during operation.
What security features does the SL900A offer?
The SL900A includes a 32-bit access password for memory protection and a 32-bit kill password for permanent tag deactivation, following standard EPC Gen2 security features.
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Cross-manufacturer alternatives
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