SLOS757G December   2011  – March 2020 TRF7962A


  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Application Block Diagram
  2. 2Revision History
  3. 3Device Characteristics
    1. 3.1 Related Products
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagrams
    2. 4.2 Signal Descriptions
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Electrical Characteristics
    5. 5.5 Thermal Resistance Characteristics
    6. 5.6 Switching Characteristics
  6. 6Detailed Description
    1. 6.1  Functional Block Diagram
    2. 6.2  Power Supplies
    3. 6.3  Supply Arrangements
    4. 6.4  Supply Regulator Settings
    5. 6.5  Power Modes
    6. 6.6  Receiver – Analog Section
      1. 6.6.1 Main and Auxiliary Receiver
      2. 6.6.2 Receiver Gain and Filter Stages
    7. 6.7  Receiver – Digital Section
      1. 6.7.1 Received Signal Strength Indicator (RSSI)
        1. Internal RSSI – Main and Auxiliary Receivers
        2. External RSSI
    8. 6.8  Oscillator Section
    9. 6.9  Transmitter - Analog Section
    10. 6.10 Transmitter - Digital Section
    11. 6.11 Transmitter – External Power Amplifier or Subcarrier Detector
    12. 6.12 Communication Interface
      1. 6.12.1 General Introduction
      2. 6.12.2 FIFO Operation
      3. 6.12.3 Parallel Interface Mode
      4. 6.12.4 Reception of Air Interface Data
      5. 6.12.5 Data Transmission to MCU
      6. 6.12.6 Serial Interface Communication (SPI)
        1. Serial Interface Mode Without Slave Select (SS)
        2. Serial Interface Mode With Slave Select (SS)
      7. 6.12.7 Direct Mode
    13. 6.13 Direct Commands from MCU to Reader
      1. 6.13.1  Command Codes
      2. 6.13.2  Reset FIFO (0x0F)
      3. 6.13.3  Transmission With CRC (0x11)
      4. 6.13.4  Transmission Without CRC (0x10)
      5. 6.13.5  Transmit Next Time Slot (0x14)
      6. 6.13.6  Block Receiver (0x16)
      7. 6.13.7  Enable Receiver (0x17)
      8. 6.13.8  Test Internal RF (RSSI at RX Input With TX On) (0x18)
      9. 6.13.9  Test External RF (RSSI at RX Input With TX Off) (0x19)
      10. 6.13.10 Register Preset
    14. 6.14 Register Description
      1. 6.14.1 Register Overview
        1. Main Configuration Registers
          1. Chip Status Control Register (0x00)
          2. ISO Control Register (0x01)
        2. Protocol Subsetting Registers
          1. TX Pulse Length Control Register (0x06)
          2. RX No Response Wait Time Register (0x07)
          3. RX Wait Time Register (0x08)
          4. Modulator and SYS_CLK Control Register (0x09)
          5. RX Special Setting Register (0x0A)
          6. Regulator and I/O Control Register (0x0B)
        3. Status Registers
          1. IRQ Status Register (0x0C)
          2. Collision Position and Interrupt Mask Registers (0x0D and 0x0E)
          3. RSSI Levels and Oscillator Status Register (0x0F)
        4. Test Registers
          1. Test Register (0x1A)
          2. Test Register (0x1B)
        5. FIFO Control Registers
          1. FIFO Status Register (0x1C)
          2. TX Length Byte1 Register (0x1D) and TX Length Byte2 Register (0x1E)
  7. 7Applications, Implementation, and Layout
    1. 7.1 TRF7962A Reader System Using SPI With SS Mode
      1. 7.1.1 General Application Considerations
      2. 7.1.2 Schematic
    2. 7.2 System Design
      1. 7.2.1 Layout Considerations
      2. 7.2.2 Impedance Matching TX_Out (Pin 5) to 50 Ω
      3. 7.2.3 Reader Antenna Design Guidelines
  8. 8Device and Documentation Support
    1. 8.1 Getting Started and Next Steps
    2. 8.2 Device Nomenclature
    3. 8.3 Tools and Software
    4. 8.4 Documentation Support
    5. 8.5 Support Resources
    6. 8.6 Trademarks
    7. 8.7 Electrostatic Discharge Caution
    8. 8.8 Export Control Notice
    9. 8.9 Glossary
  9. 9Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

Documentation Support

The following documents describe the TRF7962A device. Copies of these documents are available on the Internet at

Receiving Notification of Document Updates

To receive notification of documentation updates—including silicon errata—go to the product folder for your device on (for example,TRF7962A). In the upper-right corner, click the "Alert me" button. This registers you to receive a weekly digest of product information that has changed (if any). For change details, check the revision history of any revised document.

Application Notes

    TRF7960A Firmware Design HintsA reference for the firmware developer using the TRF7960A in conjunction with microcontroller (for example, an MSP430™ or ARM™ device).
    Management of the TRF7960 and TRF7960A Start-up Sequence System developers concerned about minimizing the current draw of TRF7960, TRF7960A, and their variants systems at start-up time need guidance about handling the Regulator Control register (0x0B) value. Valid application use case for this guidance is battery-powered RFID applications in which controlling the entire system current draw over time is of the utmost concern.
    TRF7960A RFID Multiplexer Example System This application report describes the 16-channel high-frequency (HF) (13.56 MHz) RFID reader system (based on the TRF7960A IC) designed by TI for customer use. The system firmware resides on an MSP430F2370 MCU and supports the ISO/IEC 15693 protocol in addition to communication with a host.
    TRF7960A Reference Firmware Description This application report describes the firmware implemented in the MSP430F2370 for use with the TI TRF7960A evaluation module (EVM). The TRF7960AEVM is a multiple-standard fully integrated 13.56-MHz RFID analog front end and data framing reader system. This document is designed for readers who may or may not be experienced with firmware development for RFID and want to understand the reference firmware and develop their own firmware for the TRF7960A.
    Comparison of TRF7960 and TRF7960A This application report helps current and new users of the TRF7960 high-frequency RFID/NFC reader understand the differences between the TRF7960 and the TRF7960A devices. Understanding these differences in detail and applying this knowledge to application-specific requirements helps designers make informed decisions about whether or not a bill of materials change is needed.