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STMicroelectronics’ NFC reader brings outstanding performance-to-cost ratio of embedded contactless interaction to high-volume consumer and industrial devices
10/04/2024
STMicroelectronics’ ST25R100 near-field communication (NFC) reader delivers a unique combination of advanced features, robust communication, and affordability, raising the value of contactless interaction in high-volume consumer and industrial products.
Combining its high performance and reliability with low power consumption, the 4mm x 4mm ST25R100 supports powerful contactless use cases. The tiny outline simplifies integration in products such as printers, power tools, gaming terminals, home appliances, medical devices, and access controls.
“Contactless is a great way for all sorts of products to interact for purposes such as recognizing genuine accessories, ordering consumables, and monitoring usage,” said Sylvain Fidelis, Multi-market Business Line Manager at STMicroelectronics. “Bringing an outstanding performance-to-cost ratio, with the added advantage of fast development using our software ecosystem, the ST25R100 delivers an affordable and easily embedded solution to our customers.”
Supporting advanced controls for signal quality and power management, the ST25R100 ensures strong and reliable wireless connections even in space-constrained devices that allow only a tiny antenna. Additionally, the ST25R100 features a new and enhanced low-power card detection (LPCD). This greatly extends the detection range compared to state-of-the-art devices, to ensure a user-friendly experience.
The ST25R100 integrates an advanced analog front end (AFE) and a data-framing system that supports standard NFC specifications, NFC-A/B (ISO 14443A/B, up to 106kb/s) and NFC-V (ISO 15693, up to 53kbit/s) to read cards.
The reader has a wide power-supply and peripheral-I/O voltage range from 2.7V to 5.5V. Multiple operating modes assist power management by allowing the device current to be reduced to as little as 1µA for longer runtime in battery-powered applications. There is also a reset mode that draws just 0.1µA.
The ST25R100 is sampling now, in a compact 4mm x 4mm 24-pin TQFN package that allows small devices to provide contactless card experiences. Pricing starts from $1.82 for orders of 1000 pieces.
ST will showcase the ST25R100 reader’s capabilities in practical demonstrations at Embedded World 2024 in Nuremberg, Germany, April 9-11, booth 148, Hall 4A.
NFC/HF RFID reader IC
Delivering high-end performance in a small 4×4 mm package, the ST25R100 multipurpose NFC transceiver brings the convenience of contactless interaction and features to a variety of end applications. It is especially optimized for end products in consumer and industrial segments.
The ST25R100 supports NFC reader/writer mode. The high output power allows easy integration into applications with small antennas. The reader has an excellent read range and comes with an improved low power card detection (LPCD), increasing detection range in inductive wake-up mode. During this low power wake-up mode, the system is capable of detecting the approach or the removal of tags. The IC contains an RC oscillator and programmable timer to automatically scan for cards or other NFC-enabled devices like a smartwatch or a phone when in WU mode.
The high sensitivity of the ST25R100, supported by ST’s noise suppression receiver (NSR) technology, allows successful reads even in noisy environments.
The device includes an advanced analog front end (AFE) and a highly integrated data framing system for NFC-A/B (ISO 14443A/B) and NFC-V (ISO 15693) to read cards. The transparent mode of the AFE can be used to implement other custom protocols in reader mode.
The ST25R100 comes in a compact 4x4mm 24-pin TQFN package, allowing the integration of NFC technology in small devices.
The ST25R100 is designed to operate from a wide power supply range (2.7 to 5.5 V) and a wide peripheral IO voltage range (from 2.7 to 5.5 V), within a broad ambient temperature range from -25 °C up to +85 °C.
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All features
- Operating modes
- Reader/Writer
- RF communication
- ISO14443A/NFC-A at 106 kbit/s
- ISO14443B/NFC-B at 106 kbit/s
- ISO15693/NFC-V up to 53 kbit/s
- NFC Forum T1T, T2T, T4T, and T5T tag types
- Proprietary protocols, such as Kovio, CTS, B’
- Low level modes to implement MIFARE Classic® compliant or other custom protocols
- Key features
- Improved low power card detection based on inductive wake-up
- High output power with dynamic power output (DPO)
- Option to connect two independent single-ended antennas
- Adjustable ASK modulation depth
- Automatic gain control and squelch feature to maximize SNR (signal-to-noise ratio)
- Integrated regulators to boost system PSRR
- Measurement of antenna characteristics (I/Q channels)
- 256-byte FIFO
- External communication interfaces
- Serial peripheral interface (SPI) up to 6 Mbit/s
- Electrical characteristics
- Supply voltage range, from 2.7 to 5.5 V
- Peripheral communication supply range, from 2.7 to 5.5 V
- Antenna driver voltage range, up to 6VP
- Quartz oscillator capable of operating with 27.12 MHz crystal with fast startup
- Operating modes
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