STMicroelectronics ST25R210 Universal NFC Reader
STMicroelectronics ST25R210 Universal NFC Reader supports NFC initiator, NFC target, NFC reader, and NFC card emulation operations. The high output power of up to 1.6W facilitates easy integration into applications with small antennas. The reader offers an excellent read range and features improved low-power card detection (LPCD), which increases the detection range in inductive wake-up mode. During this low-power wake-up mode, the system detects the approach or removal of tags. The IC includes an RC oscillator and a programmable timer to automatically scan for cards or other NFC-enabled devices, such as smartwatches or phones, when in wake-up mode.
The device's high sensitivity, supported by ST noise suppression receiver (NSR) technology, ensures successful reads even in noisy environments. The ST25R210 product integrates an advanced analog front-end (AFE) and a highly integrated data framing system for NFC-A/B (ISO14443A/B), including bit rates up to 212kbps for NFC-F (Felica™), NFC-V (ISO15693), and NFC-A/NFC-F for card emulation mode.
The STMicroelectronics ST25R210 device achieves long-range and low-power card detection by measuring the I and Q channels, which represent the real and imaginary parts of the antenna signal. This approach minimizes power consumption. It operates across a wide power supply range (2.7V to 5.5V), an ambient temperature range (-40°C to +105°C), and a wide peripheral I/O voltage range (1.65V to 5.5V). With the combination of high RF output power, low-power modes, and a wide supply range, the device is ideal for all NFC applications.
Delivering high-end performance in a compact 4mm x 4mm 28-pin UQFPN28 package, the multipurpose NFC reader enables contactless interaction and features for various end applications. It is specifically optimized for consumer and industrial end products.
Features
- Operating modes
- Reader/writer
- Card emulation RF communication
- Reader/writer
- NFC-A/ISO/IEC 14443A up to 848kbit/s
- NFC-B/ISO/IEC 14443B up to 848kbit/s
- NFC-V/ISO/IEC 15693 up to 212kbit/s
- NFC-F/FeliCa up to 424kbit/s
- Low-level modes to implement MIFARE Classic®-compliant and other custom protocols (Kovio BC, CTS, B')
- RF communication - card emulation
- NFC-A/ISO/IEC 14443A 106kbit/s
- NFC-F/FeliCa 212/424kbit/s
- Electrical characteristics
- Wide 2.7V to 5.5V supply voltage range
- Wide 1.65V to 5.5V peripheral communication supply range
- Wide -40°C to +105°C ambient temperature range
- Quartz oscillator capable of operating with a 27.12MHz crystal with fast startup
- Key characteristics
- Passive P2P mode
- NFC Forum universal device
- Low-power inductive card detection
- I/Q demodulator with baseband channel summation
- Dynamic power output (DPO) controls the field strength to stay within given limits (software feature)
- Active wave shaping (AWS) reduces both over- and undershoots
- Noise suppression receiver (NSR) allows reception in a noisy environment
- Serial peripheral interface (SPI) up to 10Mbit/s
- Possibility to drive one differential or two independent single-ended antennas
- TruST25 Link
Applications
- Access control
- Aliro ready
- NFC forum-compliant NFC universal devices
- WPC Qi out-of-band (OOB) communication and card protection NFC readers
- WPC Ki power transmitter (PTx) communications units
- ISO/IEC 14443 and ISO15693 compliant general-purpose NFC devices
- FeliCa readers/writers
Block Diagram
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