ST M24LR64-R Manuale utente
June 2010 Doc ID17271 Rev 2 1/22
UM0925
User manual
Using the M24LR64-R datalogger reference design
Introduction
The M24LR64-R is a Dual Interface EEPROM which targets a wide range of applications
such as industrial or medical equipment and consumer electronics. It provides extra
flexibility for the design of electronic devices and for upgrading equipment parameters.
Because it features an RFID and a serial interface, the M24LR64-R is also a good fit for
RFID-enabled sensors, for which ST has developed a reference design. This user guide
describes how to use the "M24LR64-R data logger reference design", an autonomous
battery-powered RFID tag with data logger capability for recording and storing 64 Kbits of
temperature data (~4000 values).
The M24LR64-R provides:
●I²C serial interface operating at 400 kHz, from 1.8 V to 5.5 V
●ISO15693 / ISO 18000-3 mode 1 RF interface operating at 13.56 MHz
●64 Kbit EEPROM user memory
●32-bit password protection (not used in this reference design)
M24LR64-R powered data loggers can use different types of sensors such as temperature,
pressure, shock, humidity or other environmental factors. The transported articles can be
tracked throughout the supply chain, and the data can be scanned at any point using an
RFID reader.
The "M24LR64-R data logger reference design" is intended to help you get started with your
own data logger design. It uses a temperature sensor and and enables the user to start and
stop temperature acquisition and to set the acquisition frequency.
www.st.com
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Contents
1 System description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 M24LR64-R datalogger hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Compatible RF readers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 System prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Main menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 Data logger application menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Using the data logger application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 User interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Data acquisition mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3.1 Status indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4 Tracing a graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.5 Stopping acquisition mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Changing the data logger settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.1 Delay selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.2 Overwrite checkbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5 System status pictograms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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1 System description
1.1 M24LR64-R datalogger hardware
The M24LR64-R datalogger hardware is implemented using the following components:
●Dual Interface EEPROM (M24LR64-R)
●8-bit microcontroller (STM8L)
●Temperature sensor (STTS75)
●RF antenna, size : 75 mm x 45 mm (2.9 in x 1.77 in)
Refer to Figure 1.
1.2 Compatible RF readers
The M24LR64-R data logger reference design is able to work with following readers :
●Development kit reader (DEVKIT-M24LR-A): mid-range RF reader (ISO 15693, RF
13.56 MHz) interfaced via the USB bus (ref: FEIG ID ISC.MR10 A) connected to an
external pad antenna (FEIG ID ISC.ANT340/240) and an external power supply for
increased read range. See Figure 2
●Demonstration kit reader (DEMOKIT-M24LR-A): mid-range RF reader (ISO 15693,
RF 13.56 MHz) interfaced via the USB bus (ref: FEIG ID ISC.MR101 USB). See
Figure 3
●Starter kit Reader (STARTERKIT-M24LR-A): mid-range RF reader (ISO 15693, RF
13.56 MHz) interfaced via the USB bus. See Figure 4.
Note: The serial EEPROM USB reader is not suitable for use with the M24LR64-R datalogger.
Figure 1. Data logger format ANT 1
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Figure 2. Development kit USB RF reader with external antenna
Figure 3. “Demonstration kit RF reader (ISO 15693, RF 13.56 MHz)
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Figure 4. Starter kit mid-range RF reader (ISO 15693, RF 13.56 MHz)
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2 Getting started
2.1 System prerequisites
The data logger application software can be started from:
●a suite of Dual Interface EEPROM software called "M24LRxx_Application_Software"
●or from the standalone M24LR64-R Data Logger Application.
The user interface is almost the same in both cases.
Before starting you must first:
●Install the setup.exe file.
●Install the corresponding drivers
●Connect the reader via cable to the PC.
Please refer to Install Guide if you encounter problems during installation.
In Windows Desktop, double click the M24LRxx_Application_Software icon.
When the application starts, you will be prompted to select the kit you wish to use as shown
in Figure 5.
Figure 5. Startup dialog box
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You must select one of the three following kits to work with the M24LR64-R datalogger:
●Starter kit
●Demo kit (USB based)
●Demo kit (based on the RS232 port - old version)
●Development kit
Then press the OK button.
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If you have a Development kit, choose one of the following methods.
First method:
Choose a Demo kit (USB or RS232) depending on the connection that you want to
use.
Do not check the option: add Serial EEPROM USB Reader.
Second method:
Plug the USB RF Reader to the PC.
Plug the USB serial EEPROM reader to the PC.
Note: The serial EEPROM USB reader (I2C connection) is not suitable for use with the data logger
application. Do not connect I2C cable to the data logger.
Once the kit has been selected, the software checks that the selected readers are properly
connected. A progress bar appears during the check as shown in Figure 6.
Figure 6. Connection check performed by the M24LR64-R datalogger software
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If a problem occurs, a message box is displayed to indicate what the problem is:
●If the development kit is used, the problem could be:
– medium-range RF reader not plugged in the USB port
– medium-range RF reader driver not installed
– I2C bus reader not plugged in the USB port
– I2C bus reader driver not installed
●If the demo kit is used, the problem could be:
– medium-range RF reader not plugged in the USB port
– medium-range RF reader driver not installed
●If the starter kit is used, the problem could be:
– Short-range RF reader not plugged in the USB port
– Short-range RF reader driver not installed
2.2 Main menu
When drivers have been installed correctly, and the selected reader has been connected to
the PC, the application main menu appears.
2.2.1 Data logger application menu
Use the menu at the top to start the data logger application.
See Figure 7
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Figure 7. Data logger application main menu
Altri manuali per M24LR64-R
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