Melex DVK90132 User manual

DVK90132

MLX90132 Development Kit User Manual

REVISION 006 - JUNE 19, 2017

390129013201

Features and Benefits

Conforms with ISO/IEC 18092 (NFC)

Conforms with ISO/IEC 14443 A and B,

Conforms with ISO/IEC 15693

Conforms with ISO/IEC 18000-3 mode 1

High speed communication (848kbit/s)

Embedded RF field and TAG detectors

Application Example

NFC enabled car for access and start

Ordering information

Part Code Temperature Code Package Code Option Code Packing Form Code

MLX90132 R (-40°C to 105°C) LQ (Lead free QFN 5x5 32 leads) AEA-000 RE

MLX90132 R (-40°C to 105°C) LQ (Lead free QFN 5x5 32 leads) AEA-000 TU

General Description

The MLX90132 is a 13.56MHz RFID/NFC transceiver IC

developed by Melexis. The DVK90132 is an assembled

printed circuit board simplifying the evaluation of the

MLX90132 and allowing the development of specific

applications like NFC reader for car access.

The DVK90132 embeds a minimum set of components

around the MLX90132 IC to make it functional as an

NFCIP-2 reader conforms to ISO/IEC14443 (type A and

type B up to 848kbps), ISO/IEC18092 (up to 424kbps)

and ISO/IEC15693 international protocols. The

development kit DVK90132 also features on-PCB

printed RFID antennas with optimized matching

network for the maximum RFID performances.

The DVK90132 is connected to a microcontroller board

based on a STM32F103 ARM CORTEX M3 from the

company STMicroelectronics®. This microcontroller

embeds the required firmware for a stand-alone easy

and quick evaluation of the MLX90132. A

Development mode can also be selected to control the

device through a set of TCL script examples allowing

the development of higher layer applications.

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Contents

Features and Benefits................................................................................................................................ 1

Application Example.................................................................................................................................. 1

Ordering information ................................................................................................................................ 1

General Description................................................................................................................................... 1

1. DVK90132 global description................................................................................................................. 3

2. DVK90132 Schematic & BOM ................................................................................................................ 4

2.1. Schematics ..........................................................................................................................................4

2.2. Bill of materials ...................................................................................................................................6

2.3. DVK90132 Printed RFID antennas......................................................................................................8

3. Firmware of the DVK90132 ................................................................................................................... 8

4. Installing the Software........................................................................................................................... 8

4.1. STM32 USB driver ...............................................................................................................................8

4.2. TCL software........................................................................................................................................9

4.2.1. TCL engine: ActiveTcl....................................................................................................................9

4.2.2. TCL editor: Ezdit............................................................................................................................9

4.2.3. DVK90132 DLL...............................................................................................................................9

5. Getting started with the DVK90132..................................................................................................... 10

5.1. Standalone mode..............................................................................................................................10

5.2. Development mode ..........................................................................................................................11

5.2.1. TCL script examples ....................................................................................................................11

6. Contact................................................................................................................................................ 20

7. Disclaimer............................................................................................................................................ 20

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1. DVK90132 global description

The development kit DVK90132 is composed of two boards connected together with a specific PCB connection.

The first board embeds the MLX90132 NFC/RFID reader IC and the minimum required components to make it functional as

an NFCIP-2 reader conforms with ISO/IEC14443 (type A and type B up to 848kbps), ISO/IEC18092 (up to 424kbps) and

ISO/IEC15693 international protocols. Two on-PCB printed RFID antennas are available and selected through 0ohm bridge

resistors. An optimized matching network is also available for maximum RFID performances.

The second board forming the DVK90132 is a microcontroller PCB based on a STM32F103 ARM CORTEX M3 form the

company STMicroelectronics®. This microcontroller embeds the required firmware for a stand-alone easy and quick

evaluation of the MLX90132. A Development mode can also be selected to control the device through a set of TCL script

examples allowing the development of higher layer applications. The board is featuring an LCD displaying information in

stand-alone mode and also an on-PCB joystick use for user selection.

Figure 1: DVK90132 top and bottom views

DVK90132

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2. DVK90132 Schematic & BOM

2.1. Schematics

Figure 2: Schematics MLX90132

Notes:

The driver supply VDD_TX can be changed on the board from +3.3V to +5V (VCC) by disconnecting the resistor R9 and

connecting a 0 ohm resistor in place of R10 (please refer to the schematic portion “Power supply decoupling”.

It is possible to supply the MLX90132 by an external source by removing the jumpers JP1/JP2 and plugging the power

supply on JP1[2] / TP3 for supplying VDD (resp JP2[2] / TP4 for supplying VDD_TX)

The antenna used can be changed on the board with the jumper resistors R37 to R40. For more information concerning

the on-board PCB trace antenna, please refer to the chapter DVK90132 Printed RFID antennas below.

The matching network depends on the PCB trace antenna and the VDD_TX to be used. If those values are changed on

the DVK90132, the values of the matching network might have to be recalculated accordingly. For more information on

how to calculate it, please refer to the application note MLX90130/32 antenna design guide available on Melexis

SoftDist, in directory MLX90132/MLX90132_Documentation/ MLX90132_Application_notes.

VDC is an output which has to be stabilized externally with the 33pF capacitor C3. The external diode D3 might also be

added to connect VDC to VDD, allowing to improve the performance of the Field detection and TAG detection feature

The user should take care that the device might be potentially supplied over SPI pins and the pin IRQ_IN.

To guarantee a proper POR, the SPI-input might be set in high impedance state by the host MCU and an external pull-up

on IRQ_IN would be connected

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Figure 3: Schematics Microcontroller & Peripherals

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2.2. Bill of materials

The tables below give an overview of all components that compose the development kit DVK90132.

Reference

Value

Description

C1, C6

Not Connected

Antenna matching, EMI filter capacitors

220pF

Antenna matching network, parallel resonance

capacitor Cp

C2, C7

180pF

Antenna matching network, serial resonance

capacitor Cs

33pF

VDC decoupling capacitor

10pF

Antenna matching network, additional parallel

resonance capacitor Cp

C11, C17

4.7uF

VDD_TX / VDD decoupling capacitor

C12, C18

100nF

VDD_TX / VDD decoupling capacitor

C13, C15

10pF

27.12MHz crystal load capacitors

BAT54

Diode to connect VDC to VDD

L1, L3

0R (shortcut)

Antenna matching, footprint for EMI filter inductors

430nH

50x38mm RFID antenna, 2 turns

BLM18AG601SN1

VDD EMI filter inductor

500nH

20x30mm RFID antenna, 3 turns

Not Connected

Antenna matching, footprint for EMI filter inductors

C34

Not Connected

Antenna matching, footprint for EMI filter capacitors

CON_HEADER_2X5

UART/SPI connector

R2, R7

220R

Antenna matching network, feedback Rx resistors

10k

Pull-up resistor for Vdc linked to the diode D3

10k

Antenna matching network, resonance damping

resistor

VDD_TX = 3V bridge resistor

R10

Not Connected

VDD_TX = 5V bridge resistor

R11

4.7k

Pull-up/down resistor SSI_0

R36

Not Connected

R38, R39

Bridge resistors for antenna L2

R37, R40

Not Connected

Bridge resistor for antenna L6

R41

Connect TMS pin to VDD

SPI<->UART

CON_HEADER_1X3

SPI/UART jumper selection

JP1

JUMPER

VDD supply

JP2

JUMPER

VDD_TX supply

MLX90132

MLX90132 RFID/NFC reader IC

NX2520SA 27.12MHz EXS00A-

CS05164

27.12 MHz crystal from NDK

Table 1: DVK90132 Bill of materials “Schematics MLX90132”

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Reference

Value

Description

C8, C10

10pF

8MHz crystal load capacitors

C9, C14

22pF

32kHz crystal load capacitors

C16, C19, C20, C21, C22,

C23, C24, C25, C26

100nF

Decoupling capacitors (Ceramic)

C27, C29, C31, C32, C33

10uF

Decoupling capacitors (Tantalum, 20% Tolerance)

C28

10nF

Decoupling capacitor (Ceramic)

C30

100uF

T491T Decoupling capacitor (Tantalum, 20%

Tolerance)

D1, D2

LED green/red

LED

BLM18AG601SN1

VDD EMI ferrite

uSD connector

LCD Connector

CON_HEADER_2X5

UART/SPI connector

CON_HEADER_2X10

JTAG Connector

Q1, Q2

NPN

NPN Bipolar Transistor

R1, R3, R4

4.7k

Thick Film Chip Resistor, 1 Ohm to 2.2M Ohm Range,

5% Tolerance, 0402 Size, 0.063 W

R8, R22

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

R12, R15, R16, R17, R18,

R20, R23, R25, R26, R27,

R28, R30, R32, R35

10k

Thick Film Chip Resistor, 1 Ohm to 2.2M Ohm Range,

5% Tolerance, 0402 Size, 0.063 W

R13, R24

10k

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

R14, R19, R21

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

R29

47k

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

R31

1.5k

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

R33

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

R34

33k

Rectangular Thick Film Chip Resistor, 10 Ohm to 330k

Ohm Range, 0.1% and 0.5% Tolerance, 0603 Size,

0.063 W

SW-3

Switch 2 positions (microcontroller Wake-up)

SW-PB A

Push-Button (Reset)

STM32F103CBT6

STM32 ARM-based 32-bit MCU with 128 Kbytes Flash,

48-pin LQFP

JOYSTICK ALPS

4 directions + 1 selection buttons

TLV1117

800 mA, Low Voltage, Low Quiescent Current LDO

Regulator, 3-Pin SOT-223

USB-PLUG-A1

CON_USB_MINI_B_90

Connector USB-MINI-B, SMD, Right Angled

NX5032GA 8MHz S1-2070-5030-10

8MHz Crystal Oscillator from NDK

32kHz

32kHz Crystal Oscillator

Table 2: DVK90132 Bill of materials “Schematics Microcontroller & Peripherals”

* Components not mounted

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2.3. DVK90132 Printed RFID antennas

Antenna

Outer dim.

Inner dim.

Track width

Dist. Btwn

tracks

Nbr of Turn

Inductor

[nH]

Resistor

[ohm]

1880 x 1340 mils

4475 x 3404 mm

1700 x 1169 mils

4318 x 2969 mm

40 mils

101.16 mm

10 mils

25.4 mm

430

0.6

1170 x 790 mils

2972 x 2007 mm

1064 x 684 mils

2703 x 269 mm

20 mils

50.8 mm

10 mils

25.4 mm

500

0.2

Table 3: On-PCB printed RFID antennas

3. Firmware of the DVK90132

The embedded firmware of the DVK90132 is available on Melexis SoftDist, with other examples, in the directory

MLX90132/MLX90132_Firmware.

Those examples can easily be opened and recompiled using the free licence KEIL compiler for the STMicroelectronics ARM

microcontroller STM32F103 cortex M3.

The DVK90132 is built with a 20-pin JTAG connector available below the LCD screen. This allows to easily reprogram the

firmware of the DVK90132 using the ST-LINK programmer with the ST_LINK utility software which can be directly

downloaded from the link below. Note that the ST_LINK programmer is not provided with the DVK90132 but can be easily

bought from the link below.

The following procedure should be followed to reprogram the DVK90132:

1. Connect the ST-LINK to the USB of the computer

2. Connect the 20-pin flat cable to the JTAG connector of the DVK90132 (P7 below the LCD screen)

3. Connect the USB of the DVK90132 to the computer to power-up (green LED D2 switched ON)

4. Open the ST_LINK UTILITY firmware

5. Select FILE -> OPEN FILE and choose the required .hex file

6. Select TARGET -> CONNECT

7. Select TARGET -> PROGRAM & VERIFY

8. Press PROGRAM, at the end green text should be displayed in the window below

9. Select TARGET DISCONNECT

Link to Keil Compiler: http://www.keil.com/stmicroelectronics/arm_overview.asp

Link to ST-LINK programmer: http://www.st.com/internet/evalboard/product/219866.jsp

Link to the T_LINK utility: http://www.st.com/internet/evalboard/product/219866.jsp

4. Installing the Software

The following paragraphs describe how to download and install the TCL software and the USB driver.

4.1. STM32 USB driver

The USB drivers are automatically installed and recognized by the operating system when connected to the user computer;

there is no need for a specific driver installation.

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4.2. TCL software

There are several possibilities to interface the DVK90132 and software available to write TCL scripts. The following

paragraphs propose a suite of software which can be downloaded and used for free. The user has to agree with

the respective software license.

4.2.1. TCL engine: ActiveTcl

The software can be downloaded on: http://www.activestate.com/activetcl/downloads, but is also available on Melexis

SoftDist, in directory MLX90132/MLX90132_Software.

Select the version 8.6.1 for Windows (x86) and install it. This software includes the TCL compiler.

4.2.2. TCL editor: Ezdit

The software (also available on Melexis SoftDist in directory MLX90132/MLX90132_Software) can be downloaded on:

http://code.google.com/p/ezdit/downloads/detail?name=ezdit-windows-0.9.1.zip&can=2&q,

This editor allows to edit, to create and to execute TCL scripts. It can be used without installation. To link the editor

to the TCL engine installed with ActiveTCL (named wish85 or wish86 depending on the version), it is necessary to

do the following:

Select TOOLS and click on run

In the second row write the path to the executable tclsh85.exe or tclsh86.exe and add the command {%F} with

a space in-between

In our example the path is C:/Tcl/bin/tclsh85.exe {%F}

Figure 4: Ezdit TCL editor configuration

4.2.3. DVK90132 DLL

This DLL is used to link the DVK90132 with the TCL scripts. After having downloaded it from Melexis SoftDist

(directory MLX90132/MLX90132_Software) it has to be placed at the root of the D:/ or C:/ drive.

Examples: D:\ strfnfcaplugin.dll or C:\ strfnfcaplugin.dll.

At the beginning of each TCL script the DLL has to be loaded with the following command, specifying the path of

the DLL location:

Examples: load D:// strfnfcaplugin.dll or load C:// strfnfcaplugin.dll

More information about TCL script can be found on Internet. As it is an open source language there are a large

number of dedicated websites such as http://wiki.tcl.tk/.

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5. Getting started with the DVK90132

The DVK90132 allows very quick and easy evaluation of the MLX90132 NFC/RFID reader IC. By simply connecting the USB

port to the user computer, the DVK90132 is supplied and Start-up menu appears. Then the user simply has to select the

mode by moving left/right the Joystick on the board (a blue square shows the mode currently selected) and press on it.

The communication interface UART or SPI is selected with the switch “SPI <-> UART” at power-up of the DVK90132. Any

change of this jumper after power-up will not have any impact anymore without a complete reset of the board by

removing the USB connection. The selected communication interface is displayed at bottom-right side of the LCD screen.

Figure 5: Start-up menu (Standalone/Development mode selection when UART is selected)

5.1. Standalone mode

The standalone mode can be used for quick and easy evaluation; the DVK90132 is continuously sensing the HF field for

presence of any ISO/IEC14443 (A and B) and ISO/IEC18092 (Felica) compatible transponders and displays its unique

identifier when found.

Figure 6: Standalone mode, examples of displayed messages

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