mcu rf overview dec 2010

7/29/2019 Mcu RF Overview Dec 2010

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With more than 20 years

experience, Texas Instruments isan industry leader in RFID

technology and the worlds largest

integrated manufacturer of TI-RFID

tags, TI-RFID smart inlays and TI-

RFID reader systems. With more

than 1billion RFID tags

manufactured, TI-RFID technology

is used in a broad range of RFID

applications worldwide.

MCU RFRadio

FrequencyIDentification


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Data Rate

(bps)100k 1M 10M10k1k

0.1m

Short Range Wireless Communication

RFID

IdentificationAuthentication

Wireless Interface

Passive

Active


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RFID Technology Overview


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RFID is a

wireless technology for identification and data

exchange which turns assets into smart assets

passive

maintenance-free

contactless

passive

maintenance-free

contactless

Whats RFID?


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The radio waves are generated

by the readers antenna.

A tag in the RF field uses energy from the radio

waves to respond to the readers commands

Tag

Server

Interface

Antenna

Reader

Energy

Data

How does a RFID system work?


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Radio Waves

Radio signals are electromagnetic waves, having a magnetic

component (H-Field) and an electric component (E-Field)

LF & HF systems use the Magneticfield to transfer power by

induction

Strength of this field falls off quickly

Liquids have less of an effect on H-Field

UHF systems use the Electricfield to transferpower by capacitive coupling

Strength of this field doesnt fall off as quickly

which provides potentially longer read distances

Liquids absorb E-field and reduce performance

Metals either shield signals or detune the inlays Special metal mount tags are typically required

ELECTRIC (E)FIELD

MAGNETIC (H)FIELD

Physical Background


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LF HF UHF

Frequency 125 ~ 135kHz 13.56MHz 860 ~ 960MHz

Read range ~ 2m


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HF Product 13.56MHz

Transceiver IC

Die

Inlay

Transponder


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ISO 15693 HF-I Product Line Vicinity cards

International standard for Identity cards

History is routed in Tag-it products

Reading distances up to 1m (39) Applications: product authentication and tracking

ISO 14443 Wireless Payment Proximity cards International standard for contact less smart cards

Type A and Type B

Defines the RF interface and communications layer

Reading distances up to 100mm (4) Applications: ticketing and payments

HF Standards


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Wafers

Inlays

Tags

Transceiver ICs

Evaluation Readers

High Frequency Products


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Benefits:Benefits: Provide a high level of system flexibility based on ISO15693 / ISO18000-3

standard Systems are capable of reading multiple tags at the same time

High reliable Chip / Antenna connection based on ACF

Key Features:Key Features: 64bit UID (Unique IDentification Number)

Supports enhanced inventory commands

Available in two memory sizes (write & read access):2kbit (Tag-it HF-I Plus)

256bit (Tag-it HF-Standard and Tag-it HF-Pro)

Memory pre-programming and TI-memory lock (TI unique feature)

User Page locking

High data retention >10 years @ 55degC

Tag-it HF-I Transponder Die and Inlay


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Available Form Factors:Available Form Factors: Square 45 x 45mm

Large rectangle 45 x 76mm

Medium rectangle 34 x 65mm

Small rectangle 38 x 22.5mm Circular 24.2mm

CD/DVD 32.5mm

Eachinl

aywillbesepa

rately

tunedto

centerfr

eq

Eachinl

aywillbe

separately

tunedto

centerfr

eqChip

Foil capacitor

(laser trimmed)

TI Inlay Construction:TI Inlay Construction:

Antenna

fres

ReadRange

- 1MHz +1MHz

100%

60%

Laser Tuning +/- 200kHz

Tag-it HF-I Transponder Inlays


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600

550

500

450

400

350

300

250

200

READINGR

ANGE(

mm)

TRANSPONDERS

CIRCULAR INLAY

CD INLAY (in air)

650

700

ENCAPSULATED TAG

MINIATURE INLAYLR2000 READER @ 4 W

ANT-T01A ANTENNA

LARGE INLAY

CARD

SQUARE INLAY

ACCESS CARD INLAY

Tag-it HF-I Plus- 2k Bit user memory

Tag-it HF-I Pro

- 256 Bit User memory- Kill command- password protected write command

Tag-it HF-I Standard- 256 Bit User memory

HF Comparative Read Ranges


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Product Authentication

Ski Ticketing

Library Management

Medical Application

Asset Management

eMetering

Access Control

Point-of-Sales

HF Applications


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TRF796x

HF TRF Reader IC Products

TRF796x

HF TRF Reader IC Products


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Authentication

Financial Access Control

Product authentication

Asset tracking

Pharmaceutical

Library mgmt

Embedded Authen.

Physical access

Equipment access

Computer networkHotel Door lock

Digital Door Lock

Wireless commerce/POS

Web based payments

Public Transit Ticketing

Prepayment eMetering

Product authentication

Product calibration

Patient & Staff authentication

Pharmaceutical authentication

Blood Glucose meters

Blood bag tracking

Medical

HF Contactless Reader Markets


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Products (all are pin for pin compatible) TRF7960 supports ISO14443A/B, ISO15693

TRF7961 supports ISO15693

Configurability/flexibility

Configurable I/O levels to accommodate multiple uP voltages 11 User accessible & controllable registers for fine tuning of system

Parallel data communication OR Serial 4-pin SPI interface

MSP430 source code available free through Extranet Site

ACAdapter

SystemPower

AC/DCAdapter

SystemInterface

RS232RS485USB

TRFReader /Writer

MSP430Stellaris

13.56MHz

Host System

(PC, PLC, etc.)

Running GUI or Process

SPI or Parallel

Clock

+V

4

MagneticDipole AntennaIncl. Matching

Fixed RFID Reader

HFTag

Antenna

TRF7960/61 - HF Reader Family + MCU


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Pin CompatiblePin Compatible TRF7960 supports ISO14443A/B, ISO15693

TRF7961 supports ISO15693 & Tag-it

Low Power / Small SizeLow Power / Small Size 2.7 to 5.5V input supply range

7 user selectable power modes for maximizing battery life

32pin QFN (5mm x 5mm)

IntegrationIntegration Fully integrated protocol handling: encoding, decoding, packetization,

and error checking w/ high data rate support (106, 212, 424 & 848kbps)

Multiple, integrated LDOs w/ high PSRR

Clock output for microcontroller minimizes total Bill of Materials (BOM)

Dual AM & PM (Phase Modulation) receivers and RSSI readings

Programmable output power, 100mW and 200mW

Configurability / FlexibilityConfigurability / Flexibility Configurable I/O levels to accommodate multiple uP voltages

Selectable receive gain, and AGC 11 user accessible & controllable registers for fine tuning of system

Parallel data communication OR Serial 4-pin SPI interface

MSP430 source code available

Useable over an high temperature range (-40degC 110degC)

Development

Tool

TRF796x Key Features


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+

= Ease in evaluation

= Available Schematic, BOM, Gerber Files= Available Source Code

= QuickerQuickertime to market

EVM

Graphical User Interface

TRF7960EVM - Development Tool

mcu rf overview dec 2010

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