آر اف (فرکانس رادیویی) و بی‌سیم آی‌سی آر‌اف‌آی‌دی و کنترل دسترسی

Product Attributes

Introduction

The TRF7963A is an integrated AFE and data framing device for 13.56 MHz RFID read/write systems, supporting ISO/IEC 14443 A and B as well as Sony FeliCa. With built-in programmable options, the device is suited for a wide range of proximity identification system applications. The reader is configured by selecting the desired protocol in the control registers. Direct access to all control registers allows fine-tuning of various reader parameters as needed. The TRF7963A handles all framing and synchronization tasks for on-board ISO protocols, supporting data rates up to 848 kbps. The device also supports read/write mode for NFC Forum Tag Types 1, 2, 3, and 4. To support NFC Forum Tag Types 2, 3, and 4, the device allows use of the built-in protocol decoder in Direct Mode 2. NFC Forum Tag Type 1 requires Direct Mode 0. Other standard and custom protocols can also be implemented using Direct Mode 0. Direct Mode 0 gives the user full control of the AFE, with access to raw subcarrier data or unframed but ISO-formatted data along with the associated (extracted) clock signal. The receiver system features a dual-input receiver architecture for maximum communication reliability. The receivers include multiple automatic and manual gain control options. Signal strength received from transponders, ambient sources, or internal levels is available in the RSSI register. Communication between the MCU and the TRF7963A reader supports either SPI or parallel interface. When using the built-in hardware encoder and decoder, transmit and receive functions share a 12-byte FIFO register. For direct transmit or receive operation, the encoder or decoder can be bypassed, allowing the MCU to process data in real time. A wide supply voltage range of 2.7 V to 5.5 V is supported, with 1.8 V to 5.5 V data communication levels for MCU I/O interfaces. When operating from a 5 V supply, the transmitter offers selectable output power levels of 100 mW (+20 dBm) or 200 mW (+23 dBm) equivalent into a 50 Ω load, with support for OOK and ASK modulation at selectable modulation depths. A programmable auxiliary regulator provides up to 20 mA of power for the MCU and other external circuits within the reader system.

Features

• Fully integrated protocol handling for ISO/IEC 14443 A and B, NFC Forum Device Types 1 to 4, and FeliCa
• Input voltage range: 2.7VDC to 5.5VDC
• Programmable output power: +20 dBm (100 mW) or +23 dBm (200 mW)
• Programmable I/O voltage level: 1.8 VDC to 5.5 VDC
• Programmable system clock frequency output (RF, RF/2, RF/4)
• Programmable modulation depth
• Dual receiver architecture with RSSI for "read vulnerability" elimination and in-band noise detection for adjacent reader systems or surrounding environments
• Programmable power modes for ultra-low-power system design (< 0.5µA in shutdown)
• Parallel or SPI interface
• Integrated voltage regulator for MCU power supply
• Temperature range: -25°C to 85°C
• 32-pin QFN package (5mm×5mm) (RHB)

Applications

• Secure access control
• Digital door locks
• Medical systems
• Transit ticketing
• Event ticketing