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M24LR-DISCOVERY
M24LR-DISCOVERY evaluation kit
Data brief
Features
•M24LR board
– M24LR04E-RMN6T/2 Dual Interface
EEPROM with I2C and ISO/IEC 15693 RF
interfaces, 4 Kbits of EEPROM and
password protection in SO8N package
– STM8L152C6T6 8-bit microcontroller, with
8 Kbytes of Flash memory
– STTS751-0WB3F, low-voltage digital
temperature sensor
– 20 x 40 mm inductive antenna etched on
the PCB
– Two function buttons (User and Reset)
– SWIM connector for programming and
debugging
–I
2C connectors
– LCD (24 segments, 4 commons)
•RF transceiver board
– CR95HF-VMD5T 13.56 MHz multi-protocol
contactless transceiver IC with SPI and
UART serial access
– STM32F103CB 32-bit microcontroller, with
128 Kbytes of Flash memory
– 47 x 34 mm 13.56 MHz inductive antenna
etched on PCB and associated circuitry
– USB connector for communication with
host PC and demonstration board
powering
Figure 1. M24LR board and RF transceiver board
RF transceiver board
M24LR board
www.st.com
Description M24LR-DISCOVERY
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1 Description
M24LR-DISCOVERY is a ready-to-use kit which features the M24LR04E-R Dual Interface
EEPROM IC. It addresses a wide range of applications such as industrial or medical
equipment and consumer electronics. This kit contains 2 different boards, as shown in the
figure on cover page.
The M24LR board is battery-less and is powered by RFID readers or NFC-enabled phones
supporting ISO/IEC 15693.
The RF transceiver board is an RFID reader demonstration board and is composed, among
other parts, of a CR95HF (13.56 MHz multi-protocol contactless transceiver IC with SPI and
UART serial access). This board has to be plugged in to a PC and comes with a
demonstration software.
The M24LR board also works with Android NFC phones supporting ISO/IEC 15693. An
application called NfcV-Reader is available on Google Play. Performance may vary
depending on NFC phone's RF management.
System requirements
•Windows® PC (2000, XP, Vista, 7)
•ISO/IEC 15693 capable NFC phones
1.1 Demonstration software
The M24LRxx application software can be uploaded from www.st.com and installed on your
PC. It consists in:
•an M24LR/CR95 application software setup file [STSW-M24LR011]
•an STM8L firmware, see STM8L firmware
1.1.1 M24LRxx application software
The PC software allows to:
1. Launch setup.exe executable.
2. Choose CR95HF DEMO KIT tab.
3. Select demo NDEF messages tab.
4. Click on demo NDEF & Energy Harvesting tab.
The latest versions of this demonstration source code and associated documentation can
be downloaded from www.st.com.
1.1.2 STM8L firmware
Development toolchain
In case of an STM8L firmware change, the user has to download:
•STMicroelectronics, ST Visual Develop (STVD)
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STM8L firmware
Demonstration software is preloaded in the board's Flash memory. This demonstration
displays on the LCD:
•The text messages stored in the M24LR04E-R Dual Interface EEPROM
•The internal voltage of the M24LR board
•The ambient temperature measured from the sensor
1.2 Android application
Install the NfcV-Reader applet available from Google Play. This application enables the NFC
communication (Settings-Wireless & Networks-NFC) for evaluation on an Android device.
1. Download the NfcV-Reader App from Google Play and install it on the Android device.
2. Launch the NfcV-Reader application.
3. Place the device's NFC antenna close to the M24LR board antenna.
The NFC phone powers the M24LR board.
The text message can be changed using the NFC phone (select NDEF function and select
write NDEF message menu).
Performance may vary depending on NFC phone's RF management.
Revision history M24LR-DISCOVERY
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Table 1. Document revision history
Date Revision Changes
17-Jul-2012 1Initial release.
11-Mar-2013 2
Updated the first item of the M24LRxx application software in
Section 1.1: Demonstration software.
Updated the name of the executable file in Section 1.1.1: M24LRxx
application software.
30-Mar-2015 3 Updated Figure 1 on Cover page.
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