Texas Instruments TRF7970 Manual

TRF7970A Multiprotocol Fully Integrated 13.56-MHz RFID and Near Field Communication

1 Device Overview

1.1

Features

1
• Supports Near Field Communication (NFC)
Standards NFCIP-1 (ISO/IEC 18092) and NFCIP‑2
(ISO/IEC 21481)
• Completely Integrated Protocol Handling for
ISO15693, ISO18000-3, ISO14443A/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 ISO14443A
Anticollision (Broken Bytes) Operation
(Transponder Emulation or NFC Passive Target)
• Input Voltage Range: 2.7 VDC to 5.5 VDC
1.2

Applications

• Mobile Devices (Tablets, Handsets)
• Secure Pairing ( Bluetooth
Wireless Networks)
• Public Transport or Event Ticketing
• Passport or Payment (POS) Reader Systems
1.3

Description

The TRF7970A device is an integrated analog front end and data-framing device for a 13.56-MHz RFID
and Near Field Communication (NFC) system. Built-in programming options make the device suitable for a
wide range of applications for proximity and vicinity identification systems.
The device can perform in one of three modes: RFID and NFC reader, NFC peer, or in card emulation
mode. Built-in user-configurable programming options make the device suitable for a wide range of
applications. The TRF7970A 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.
Documentation, reference designs, EVM, and source code TI MSP430™ MCUs or ARM
available.
PART NUMBER
TRF7970ARHB
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Sample &
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(NFC) Transceiver IC
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Device Information
Tools &
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Documents
SLOS743K – AUGUST 2011 – REVISED APRIL 2014
• 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 x 5 mm)
• Short-Range Wireless Communication Tasks
(Firmware Updates)
• Product Identification or Authentication
• Medical Equipment or Consumables
• Access Control, Digital Door Locks
• Sharing of Electronic Business Cards
PACKAGE
VQFN (32)
Support & Reference
Community
Design
TRF7970A
®
MCUs are
BODY SIZE
5 mm x 5 mm