Melexis DVK90121 User Manual

DVK90121

Development kit for the MLX90121 transceiver

User Manual

390129012102 Page 1 of 13 Development Kit
Rev 006 Apr-2009

Features and Benefits

 Standard ISO communications
 User interface software
 RS232 serial communication
 Dedicated instruction set
 6 to 9Volts supply compliant

Ordering Information

Part No.

DVK90121

General Description

The development kit DVK90121 has been developed by Melexis to create specific applications using
international standards ISO/IEC and to evaluate the advantages and the high flexibility of the MLX90121

13.56MHz multi-norms RFID transceiver.
The DVK90121 consists of the evaluation board EVB90121 connected to the RFID universal development

board. The universal development board contains the firmware for the communication with the MLX90121
and the communication with a computer through the RS232 serial interface.

A user interface software UT121, developed by Melexis, allows the user controlling the communication by
initializing the MLX90121 device, sending specific commands and receiving the corresponding reply.

Figure 1: DVK90121 block schematic

UT121

User interface

Universal Development board

Pre-programmed firmware used as an interface

between the PC and the EVB90121

EVB90121

Evaluation board of the Mlx90121

13.56MHz RFID transceiver

RS232

Transponder

MLX90121

Digital interface

DVK90121

Development kit for the MLX90121 transceiver

User Manual

390129012102 Page 2 of 13 Development Kit
Rev 006 Apr-2009

Table of Contents

1. UNPACKING THE SYSTEM ........................................................................................................................................................... 3

2. CONNECTING THE SYSTEM.............................................................................................................................................................. 3

3. INSTALLING THE UT121 USER INTERFACE SOFTWARE................................................................................................................ 4

4. WORKING WITH THE UT121 USER INTERFACE SOFTWARE ......................................................................................................... 4

4.1 T

HE FIRST RUN

........................................................................................................................................4

4.2 M

AIN WINDOW

.........................................................................................................................................5

4.3 C

OMMUNICATION STATUS

........................................................................................................................5

4.4 D

EVICE STATUS

.......................................................................................................................................6

4.5 M

AIN MENU

.............................................................................................................................................6

4.6 C

OMMAND TREE

......................................................................................................................................7

4.7 C

OMMAND LIST & REGISTER’S CONFIGURATION

........................................................................................8

4.8 C

OMMUNICATION SCREEN

........................................................................................................................9

5. SET OF COMMANDS........................................................................................................................................................................ 10

5.1 OP

CODES

............................................................................................................................................10

5.2 P

ARAMETERS

........................................................................................................................................10

5.3 K

EY WORDS

..........................................................................................................................................10

5.4..................................................................................................................................................................10

5.5 E

XAMPLES

............................................................................................................................................11

5.4.1 ISO14443 type B .........................................................................................................................11

5.4.2 ISO15693 single/dual sub-carrier................................................................................................11

6. DISCLAIMER..................................................................................................................................................................................... 13

DVK90121

Development kit for the MLX90121 transceiver

User Manual

390129012102 Page 3 of 13 Development Kit
Rev 006 Apr-2009

1. Unpacking the system

The DVK90121 is delivered with all the components, documentations and software listed below.

 Evaluation board EVB90121 with its specific antenna,
 Universal development board,
 RS232 and flat cables for PC and EVB90121 connections,
 Disk set consisting of the UT121 software and associated documentations.

2. Connecting the system

When you start with the development kit DVK90121, please follow the procedure described below.

1) Connect the PCB antenna to the evaluation board EVB90121 using the SMA connector.

2) Connect the EVB90121 with its antenna to the universal evaluation board using the flat cable provided in
the box. Connect the flat cable in the PORTA connector of the universal development board (in the
middle of the three 10 pins connectors in line).

3) Connect the universal development board to the PC using the RS232 cable. The RS232 cable is fitted
into the DB9 connector of the universal development board and the other end is inserted into the COM
port of the PC (DB9 connector). The chosen COM port can be selected in the UT121 software.

4) Connect the Power Supply of the universal development board and EVB90121. Both Power Supplies are
required with a standard 2.1mm barrel connector and must be DC 6 to 9 Volts.

5) Switch on SW1 button on the universal development board.

Figure 2: Connection of the DVK90121

Important Note: The supply must be between 6 to 9 Volts DC. Higher voltage may damage permanently the

DVK90121 circuit.

3

1

2

4

Universal development board

Evaluation board EVB90121

PCB antenna

4

5

DVK90121

Development kit for the MLX90121 transceiver

User Manual

390129012102 Page 4 of 13 Development Kit
Rev 006 Apr-2009

3. Installing the UT121 user interface software

To install the software, please insert the compact disc provided with the kit in your computer and simply copy
the UT121 folder on your computer.

The user interface software is now ready to use and can be started by double-clicking on the icon UT121.
Note: To remove the UT121 software, you only need to delete the folder that you created on your PC. The

software doesn’t modify the registry and doesn’t write anything to the system folders.

4. Working with the UT121 user interface software

4.1 The first run

When you execute the UT121 software for the first time, the following window appears. It contains some
explanation about the automatic update,. Please read carefully the text displayed, choose the appropriate
update check interval and press OK button.

Figure 3: First use message

The update check interval will be used to automatically check on the Melexis WEB-site if new updates are
available. The software will ask to the user if he allows the download and the automatic replacement of the
user interface software and firmware. If you choose ‘Never’ as the update interval you will need to update the
program by yourself using the “update” command in the “option” menu.