Texas Instruments TRF7962A Manual

TRF7962A Fully Integrated 13.56-MHz RFID Reader/Writer IC

1 Device Overview

1.1

Features

1
• Completely Integrated Protocol Handling for
ISO/IEC 15693 and ISO/IEC 18000-3
• Input Voltage Range: 2.7 VDC to 5.5 VDC
• Programmable Output Power:
+20 dBm (100 mW) or +23 dBm (200 mW)
• Programmable I/O Voltage Levels:
1.8 VDC to 5.5 VDC
• Programmable System Clock Frequency Output
(RF, RF/2, RF/4)
• Programmable Modulation Depth
1.2

Applications

• Product Authentication
• Access Control
• Digital Door Locks
1.3

Description

The TRF7962A device is an integrated analog front-end (AFE) and data-framing device for a 13.56-MHz
RFID reader/writer system that supports ISO/IEC 15693. Built-in programming options make it suitable for
a wide range of applications for proximity and vicinity identification systems.
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 TRF7962A device supports data rates 6 kbps and 26 kbps with all framing and synchronization tasks
for the ISO protocols onboard. The device also supports reader/writer mode for NFC Forum tag type 5.
NFC Forum tag type 5 is supported with the built-in protocol decoders used in Direct Mode 2. NFC Forum
tag type 1 requires the use of Direct Mode 0. Other standards and custom protocols can also be
implemented by using Direct Mode 0. Direct Mode 0 lets 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 TRF7962A
reader. When the built-in hardware encoders and decoders are used, transmit and receive functions use a
12-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 TRF7962A 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.
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.
Order
Product
Folder Now
For ISO/IEC 15693 and ISO/IEC 18000-3 Standards
Tools &
Technical
Software
Documents
SLOS757G – DECEMBER 2011 – REVISED MARCH 2020
• 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 <0.5 µA)
• Parallel or SPI Interface
• Integrated Voltage Regulator for Microcontroller
Supply
• Temperature Range: –25°C to 85°C
• 32-Pin QFN Package (5 mm × 5 mm) (RHB)
• Library Management
• Medical Systems
• Remote Sensor Applications
Support & Reference
Community
Design
TRF7962A