ATA2270-EK2

ATA2270-EK2 Datasheet


Atmel ATA2270-EK2 - AVR-based 125/134.2kHz RFID Evaluation Kit User’s Guide Atmel ATAN0083

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ATA2270-EK2 ATA2270-EK2 ATA2270-EK2 (pdf)
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ATA2270-U2 ATA2270-U2 ATA2270-U2
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APPLICATION NOTE

Atmel ATA2270-EK2 - AVR-based 125/134.2kHz RFID Evaluation Kit User’s Guide Atmel ATAN0083

Introduction

Congratulations on your purchase of the 125/134.2kHz RFID evaluation kit. As a fully stand-alone RFID system, this evaluation kit is for demonstrating how Atmel integrates 125/134.2kHz RFID technology. This user guide describes the setup and operation of the evaluation kit. Section “Getting Started” on page 4 describes the assembly of the hardware and provides a demonstration of RFID. Subsequent sections discuss the variables that can be manipulated via the software.

Overview

Purpose

It is the intention of to provide everything necessary for you to decide whether 125/134.2kHz RFID is suitable for your intended application. This kit includes a reader system with an LCD screen and several Atmel transponders that demonstrate communication between the reader and transponders. The supplied hardware also provides a starting platform for developing a custom prototype.

The updated soft- and firmware related to this evaluation kit can be downloaded from the Atmel RFID server. The access code can be found in a separate document within the kit. A PC is only required to support custom demonstrations or to launch firmware updates optional tools required to re- Flash the firmware .

This user guide will be modified to reflect the updated firmware features. If your evaluation kit does not appear to have the same features listed in this document, please download and install the latest firmware from the Atmel server.

We also ask that you register your address with the registration code by sending a message to this email address:

Doing so ensures you receive notifications about software releases and password changes.

Email address:

Radio frequency identification RFID has been used for more than a decade and continues to provide more and more benefits, primarily in the areas of access control employee badge entry , animal ID ear tags or pet injectables , and auto immobilizer theft prevention RFID can be used for many additional applications as well. The wide variety of transponder features now offered makes it possible to maximize return on equity for prospective systems. An RFID reader or interrogator functions by passing an alternating current through an air core coil and thus generating an electromagnetic field. The magnetic field provides all of the power needed to operate the tag or transponder. This source of power eliminates the need for a separate power supply on the tag and thereby reduces the size, cost, and any placement constraints. In this case, the RF field operates at 125/134.2kHz. The tag responds by manipulating this RF field.

Evaluation Kit Features

This evaluation kit is scalable to accommodate new reader boards as they become available. Adding an interface to a PC-based development environment later is also possible via the mainboard. These interfaces allow the basic kit to be used for the expanding family of Atmel RFID products. As support for these features is added, the firmware can be downloaded from the Atmel RFID server and Flashed into the microprocessor on the mainboard using very common tools such as the AVR STK500, or the JTAGICE.

Atmel ATAN0083 [APPLICATION NOTE]

Included in the Kit

The kit features basic components specified individually below. ● The reader system ● An ATA2270-EK2 mainboard 1 ● An Atmel ATAB4095A-U1.1 reader board 1 ● A 125/134.2kHz RFID antenna coil 1 ● Universal power supply ● A USB-to-RS232 serial converter ● Sample tags ● Atmel ATA5577M1330C-PP ● Atmel ATA5577M1330-PAE NOA3S micromodule ● The Atmel ATA5575M2 animal ID tag ● The Atmel ATA5577 ISO card ● The Atmel ATA5575M1 ISO card ● The Atmel ATA5577 key fob ● The Atmel ATA5577 coin tag

Optional Items Not Included in the Kit

The following items are useful for additional evaluation of this kit. These can be used to re- Flash the firmware provided by Atmel or customer-specific application code.
● The Atmel STK600 starter kit and development system ● JTAGICE MKII ● AVRISP MKII ● AVR 6 downloadable from the Atmel website

Atmel ATAN0083 [APPLICATION NOTE]

Getting Started

The U2270-EK2 kit is based on the EM4095 reader chip solution which superseded the discontinued Atmel U2270B device.

The reader system consists of the reader board RB and the Atmel ATA2270-EK2 mainboard MB . The Atmel ATA2270-EK2 evaluation kit is designed to allow rapid setup and evaluation of a working RFID system. The following paragraphs provide guidance on hardware assembly, menu navigation, and writing and reading a tag.

Hardware Assembly

The steps for assembling the hardware are listed below. Ensure that the reader board is connected to the mainboard. With the mainboard oriented so that the power connector is at the lower left corner, the reader board should be oriented so that the antenna connector is on the lower right side. Connect the supplied 125/134.2kHz antenna. This is an air core coil wound around a plastic housing. Connect to power using the supplied source. This is a 12V supply capable of providing 800mA. This supply comes with interchangeable universal plugs to support operation in the US, UK, Europe, and Asia. The evaluation kit is now ready for operation. To begin, move the power switch towards the power supply plug-in ON position .

Navigating the Menus

The F1 to F4 buttons are used for jumping back to the previous menu. A four-way joystick is used for all other navigation. The “Enter” command is accomplished by pressing the center of the joystick.

Initializing a Tag

Note:

The following process contains no verification of success it is an attempt only. Ensure that a valid tag type is present in the RF field when performing this step.

When beginning to work with a new tag for the first time, the tag must be placed into a fixed configuration. Choosing “RFID”, then the “Write Configurations” menu, and then selecting YES accomplishes this. When ENTER is pressed, the system attempts to write the appropriate configuration block data into the selected tag type. The configuration block normally block 0 specifies the data rate, modulation type, number of blocks returned, synchronization type, and other features the tag is capable of supporting. This only needs to be done when the state of the tag is unknown.

Writing a Tag

The steps for writing to a tag are listed below. If there is a problem, refer to Section 5 to ensure all initial values are set in the reader system.

Ensure that the correct tag type is selected in the “RFID>Select Reader/Tag” menu. Place the tag being evaluated in the RF field. Ensure proper orientation of the tag and reader antennas. The two
antenna coils must be parallel to each other for the magnetic field to couple and provide adequate power. Go to the “RFID>Read/Write” menu and select “One Block” in the write column. Choose the desired block. Move the joystick up or down to change the block number. Move to the thirty-two bit number shown in the data column. Use the joystick to set any hex number edit high and low nibbles as desired. Press ENTER to exit. Press ENTER again to perform the write operation. Verification of the write operation is performed and audio feed-
back is provided. A message window also pops up briefly showing the status of the operation.

Atmel ATAN0083 [APPLICATION NOTE]

Reading a Tag

The steps for reading a tag are listed below. If there is a problem, refer to Section “Troubleshooting” on page 23 to ensure all initial values are set in the reader system.
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Datasheet ID: ATA2270-EK2 519159