Overview
The TRF7964A device, produced by Texas Instruments, is a multiprotocol fully integrated 13.56-MHz NFC/RFID reader and writer IC. It supports various protocols including ISO/IEC 14443 A and B, Sony FeliCa, and ISO/IEC 15693. This device is designed to be pin-to-pin and firmware compatible with the superset device TRF7970A, making it versatile for a wide range of applications in proximity and vicinity identification systems.
The device integrates an analog front end (AFE) and multiprotocol data-framing capabilities, allowing for data rates up to 848 kbps. It features built-in programming options, enabling fine-tuning of reader parameters and support for custom protocols through direct modes.
Key Specifications
| Specification | Value |
|---|---|
| Package | VQFN (RHB) with 32 pins |
| Operating Temperature Range | -40°C to 110°C |
| Input Voltage Range | 2.7 VDC to 5.5 VDC |
| Programmable Output Power | +20 dBm (100 mW), +23 dBm (200 mW) |
| Programmable I/O Voltage Levels | 1.8 VDC to 5.5 VDC |
| System Clock Frequency Output | RF, RF/2, RF/4 from 13.56-MHz or 27.12-MHz Crystal or Oscillator |
| Auxiliary Voltage Regulator Output | Up to 20 mA |
| Interface | Parallel or SPI with 127-Byte FIFO |
| Data Rate | Up to 848 kbps |
| Modulation | OOK and ASK with selectable modulation depth |
Key Features
- Completely integrated protocol handling for ISO/IEC 15693, ISO/IEC 18000-3, ISO/IEC 14443 A and B, and FeliCa™
- Integrated state machine for ISO/IEC 14443 A anticollision (broken bytes) operation
- Dual receiver architecture with RSSI for elimination of 'read holes' and adjacent reader system or ambient in-band noise detection
- Programmable power modes for ultra-low power system design (power down < 1 µA)
- Programmable modulation depth and output power levels
- Integrated voltage regulator output for other system components (MCU, peripherals, indicators)
- Support for OOK and ASK modulation
- Parallel or SPI interface with 127-byte FIFO
Applications
- Public transport or event ticketing systems
- Passport or payment (POS) reader systems
- Product identification or authentication
- Medical equipment or consumables
- Access control, digital door locks
Q & A
- What is the operating temperature range of the TRF7964A?
The operating temperature range of the TRF7964A is -40°C to 110°C.
- What protocols does the TRF7964A support?
The TRF7964A supports ISO/IEC 14443 A and B, Sony FeliCa, and ISO/IEC 15693 protocols.
- What is the maximum data rate supported by the TRF7964A?
The TRF7964A supports data rates up to 848 kbps.
- What are the programmable output power levels of the TRF7964A?
The TRF7964A has programmable output power levels of +20 dBm (100 mW) and +23 dBm (200 mW).
- Does the TRF7964A support custom protocols?
Yes, the TRF7964A supports custom protocols through its direct modes.
- What types of modulation does the TRF7964A support?
The TRF7964A supports OOK and ASK modulation with selectable modulation depth.
- What is the purpose of the dual receiver architecture in the TRF7964A?
The dual receiver architecture is designed to maximize communication robustness and eliminate 'read holes' and adjacent reader system or ambient in-band noise detection.
- How does the TRF7964A manage power consumption?
The TRF7964A has programmable power modes for ultra-low power system design, with a power down mode of less than 1 µA.
- What interface options are available for the TRF7964A?
The TRF7964A supports parallel or SPI interfaces with a 127-byte FIFO.
- What is the role of the integrated voltage regulator in the TRF7964A?
The integrated voltage regulator delivers up to 20 mA to supply an MCU and additional external circuits within the reader system.
