Product details

Frequency 13.56 MHz Standard ISO 14443A, ISO 14443B, ISO 15693, ISO 18000-3, ISO 18092, JIS X 6319-4 Operating temperature range (C) -40 to 110 Rating Catalog Transmission principle FDX - ASK, OOK, FSK, PSK
Frequency 13.56 MHz Standard ISO 14443A, ISO 14443B, ISO 15693, ISO 18000-3, ISO 18092, JIS X 6319-4 Operating temperature range (C) -40 to 110 Rating Catalog Transmission principle FDX - ASK, OOK, FSK, PSK
VQFN (RHB) 32 25 mm² 5 x 5
  • Supports Near Field Communication (NFC) Standards NFCIP-1 (ISO/IEC 18092) and NFCIP‑2 (ISO/IEC 21481)
  • Completely Integrated Protocol Handling for ISO/IEC 15693, ISO/IEC 18000-3, ISO/IEC 14443 A and B, and FeliCa™
  • Integrated Encoders, Decoders, and Data Framing for NFC Initiator, Active and Passive Target Operation for All Three Bit Rates (106 kbps, 212 kbps, 424 kbps), and Card Emulation
  • RF Field Detector With Programmable Wake-up Levels for NFC Passive Transponder Emulation Operation
  • RF Field Detector for NFC Physical Collision Avoidance
  • Integrated State Machine for ISO/IEC 14443 A Anticollision (Broken Bytes) Operation (Transponder Emulation or NFC Passive Target)
  • 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 From 1.8 VDC to 5.5 VDC
  • Programmable System Clock Frequency Output (RF, RF/2, RF/4) from 13.56-MHz or 27.12-MHz Crystal or Oscillator
  • Integrated Voltage Regulator Output for Other System Components (MCU, Peripherals, Indicators), 20 mA (Max)
  • Programmable Modulation Depth
  • 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)
  • Parallel or SPI Interface (With 127-Byte FIFO)
  • Temperature Range: –40°C to 110°C
  • 32-Pin QFN Package (5 mm × 5 mm)
  • Supports Near Field Communication (NFC) Standards NFCIP-1 (ISO/IEC 18092) and NFCIP‑2 (ISO/IEC 21481)
  • Completely Integrated Protocol Handling for ISO/IEC 15693, ISO/IEC 18000-3, ISO/IEC 14443 A and B, and FeliCa™
  • Integrated Encoders, Decoders, and Data Framing for NFC Initiator, Active and Passive Target Operation for All Three Bit Rates (106 kbps, 212 kbps, 424 kbps), and Card Emulation
  • RF Field Detector With Programmable Wake-up Levels for NFC Passive Transponder Emulation Operation
  • RF Field Detector for NFC Physical Collision Avoidance
  • Integrated State Machine for ISO/IEC 14443 A Anticollision (Broken Bytes) Operation (Transponder Emulation or NFC Passive Target)
  • 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 From 1.8 VDC to 5.5 VDC
  • Programmable System Clock Frequency Output (RF, RF/2, RF/4) from 13.56-MHz or 27.12-MHz Crystal or Oscillator
  • Integrated Voltage Regulator Output for Other System Components (MCU, Peripherals, Indicators), 20 mA (Max)
  • Programmable Modulation Depth
  • 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)
  • Parallel or SPI Interface (With 127-Byte FIFO)
  • Temperature Range: –40°C to 110°C
  • 32-Pin QFN Package (5 mm × 5 mm)

The TRF7970A device is an integrated analog front end (AFE) and multiprotocol data-framing device for a 13.56-MHz NFC/RFID system supporting all three NFC operation modes – reader/writer, peer-to-peer, and card emulation according to ISO/IEC 14443 A and B, Sony FeliCa, ISO/IEC 15693, NFCIP-1 (ISO/IEC 18092), and NFCIP-2 (ISO/IEC 21481). Built-in programming options make the device suitable for a wide range of applications for NFC, proximity, and vicinity identification systems.

The device 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 TRF7970A device supports data rates up to 848 kbps with all framing and synchronization tasks for the ISO protocols onboard. The TRF7970A device also supports reader and writer mode for NFC Forum tag types 1, 2, 3, 4, and 5. Other standards and even custom protocols can be implemented by using one of the direct modes the device offers. These direct modes let the user fully control the AFE and also gain access to the raw subcarrier data or the unframed, but already ISO-formatted, data and the associated (extracted) clock signal.

The receiver system has a dual-input receiver architecture to maximize communication robustness. The receivers also include various automatic and manual gain control options. The received signal strength from transponders, ambient sources, or internal levels is available in the RSSI register.

A SPI or parallel interface can be used for the communication between the MCU and the TRF7970A device. When the built-in hardware encoders and decoders are used, transmit and receive functions use a 127-byte FIFO register. For direct transmit or receive functions, the encoders or decoders can be bypassed so the MCU can process the data in real time.

The TRF7970A device supports a wide supply voltage range of 2.7 V to 5.5 V and data communication levels from 1.8 V to 5.5 V for the MCU I/O interface.

The transmitter has selectable output power levels of 100 mW (+20 dBm) or 200 mW (+23 dBm) equivalent into a 50-Ω load when using a 5-V supply and supports OOK and ASK modulation with selectable modulation depth.

The built-in programmable auxiliary voltage regulator delivers up to 20 mA to supply an MCU and additional external circuits within the reader system.

Integrated RF field detector with programmable wake-up levels, eight selectable power modes, and ultra-low power operation enable easy development of robust and cost-efficient designs for long battery life.

Start evaluating the TRF7970A multiprotocol transceiver IC with the DLP-7970ABP.

The TRF7970A device is an integrated analog front end (AFE) and multiprotocol data-framing device for a 13.56-MHz NFC/RFID system supporting all three NFC operation modes – reader/writer, peer-to-peer, and card emulation according to ISO/IEC 14443 A and B, Sony FeliCa, ISO/IEC 15693, NFCIP-1 (ISO/IEC 18092), and NFCIP-2 (ISO/IEC 21481). Built-in programming options make the device suitable for a wide range of applications for NFC, proximity, and vicinity identification systems.

The device 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 TRF7970A device supports data rates up to 848 kbps with all framing and synchronization tasks for the ISO protocols onboard. The TRF7970A device also supports reader and writer mode for NFC Forum tag types 1, 2, 3, 4, and 5. Other standards and even custom protocols can be implemented by using one of the direct modes the device offers. These direct modes let the user fully control the AFE and also gain access to the raw subcarrier data or the unframed, but already ISO-formatted, data and the associated (extracted) clock signal.

The receiver system has a dual-input receiver architecture to maximize communication robustness. The receivers also include various automatic and manual gain control options. The received signal strength from transponders, ambient sources, or internal levels is available in the RSSI register.

A SPI or parallel interface can be used for the communication between the MCU and the TRF7970A device. When the built-in hardware encoders and decoders are used, transmit and receive functions use a 127-byte FIFO register. For direct transmit or receive functions, the encoders or decoders can be bypassed so the MCU can process the data in real time.

The TRF7970A device supports a wide supply voltage range of 2.7 V to 5.5 V and data communication levels from 1.8 V to 5.5 V for the MCU I/O interface.

The transmitter has selectable output power levels of 100 mW (+20 dBm) or 200 mW (+23 dBm) equivalent into a 50-Ω load when using a 5-V supply and supports OOK and ASK modulation with selectable modulation depth.

The built-in programmable auxiliary voltage regulator delivers up to 20 mA to supply an MCU and additional external circuits within the reader system.

Integrated RF field detector with programmable wake-up levels, eight selectable power modes, and ultra-low power operation enable easy development of robust and cost-efficient designs for long battery life.

Start evaluating the TRF7970A multiprotocol transceiver IC with the DLP-7970ABP.

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Technical documentation

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Type Title Date
* Data sheet TRF7970A Multiprotocol Fully Integrated 13.56-MHz RFID and Near Field Communication (NFC) Transceiver IC datasheet (Rev. M) 11 Mar 2020
* Errata TRF7970A Silicon Errata (Rev. B) 16 Dec 2016
Application note Antenna Design Guide for the TRF79xxA (Rev. C) 10 Mar 2020
Application note Frequently asked questions for TRF7970A and TRF7964A devices (Rev. B) 13 Mar 2019
Application note NFC active and passive peer-to-peer communication using the TRF7970A (Rev. B) 13 Mar 2019
Application note NFC card emulation using the TRF7970A (Rev. B) 13 Mar 2019
Application note NFC/HF RFID reader/writer using the TRF7970A (Rev. B) 13 Mar 2019
Technical article An out-of-the-box Internet of Things: building a seamless and secure smart home network 12 Jun 2018
Technical article Thread vs. Zigbee – what’s the difference? 16 May 2018
Technical article Your microcontroller deserves a nap – designing “sleepy” wireless applications 28 Mar 2018
Application note Build Instructions for neard (Linux NFC) for AM335x + TRF7970A (Rev. B) 11 Jul 2017
Application note Minimizing TRF7964A and TRF7970A Current Use During Power-Down Mode (Rev. A) 28 Jun 2017
Technical article SimpleLink™ MCU SDKs: Breaking down TI Drivers 12 Apr 2017
User guide NFCLink Standalone Getting Started Guide 22 Dec 2016
Application note TRF7970A Firmware Design Hints (Rev. A) 29 Jun 2016
Application note TRF7970A NFC Reader Antenna Multiplexing 09 May 2016
Application note TRF79xxA HF-RFID Reader Layout Design Guide (Rev. A) 18 Apr 2016
Application note Using Special Direct Mode With the TRF7970A 20 Feb 2015
Application note MIFARE DESFire EV1 AES Authentication With TRF7970A 30 Dec 2014
Application note TRF7970A + MSP430G2xx NFC/RFID Module Reference Design 25 Aug 2014
User guide TRF7960ATB, TRF7970ATB NFC/HF RFID Reader Module User's Guide (Rev. A) 10 Jun 2014
White paper Wireless connectivity for the Internet of Things (IoT) with MSP430 MCUs 13 Mar 2014
White paper Navigating your way through the RFID jungle 20 Feb 2014
Application note NFC/RFID Reader Ultra-Low-Power Card Presence Detect With MSP430 and TRF79xxA 18 Mar 2013
Application note TRF7960 and TRF7970A Comparison 03 Aug 2011
More literature TRF7970A Near Field Communication Transceiver IC 16 Jun 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Application software & framework

LINUX-NFC-TRF7970A — Linux NFC (neard) for TRF7970A

This application report describes the process required to correctly build and test Linux NFC (neard) on AM335x (Cortex-A8) based BeagleBone + BeagleBone RF Cape + TRF7970ATB connected platform, using the Texas Instruments Sitara Software Development Kit (SDK) v3.03 and associated TI SDK file system (...)
Code example or demo

DLP-7970ABP Example Code (Rev. C)

SLOC297C.ZIP (148 KB)
Plug-in

DLP-7970ABP — TRF7970A NFC transceiver BoosterPack™ plug-in module

The third party provider DLP Design NFC/RFID BoosterPack (DLP-7970ABP) is an add-on board designed to fit all of TI’s MCU LaunchPads.

This BoosterPack allows the software application developer to get familiar with the functionalities of TRF7970A Multi-Protocol Fully Integrated 13.56 MHz NFC/ HF RFID (...)
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