ST X-NUCLEO-NFC01A1 Manuale utente

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October 2014 DocID026566 Rev 2 1/9

UM1793

User manual

Dynamic NFC tag expansion board based on M24SR

for STM32 Nucleo

Introduction

The X-NUCLEO-NFC01A1 is a demonstration kit to evaluate the features and capabilities of

the M24SR series. It is based on the M24SR64 device. This shield can be plugged on the

Arduino UNO R3 connectors of any STM32 Nucleo board. This module is compatible with

the following STM32 class of microcontrollers: STM32L0, STM32L1, STM32F0, STM32F1,

STM32F3, STM32F4.

The M24SR64 device is a dynamic NFC/RFID tag IC with a dual interface. It embeds a

64 Kbit EEPROM memory. It can be operated from:

•an I2C interface

•a 13.56 MHz RFID reader or a NFC phone.

The I2C interface uses a two-wire serial interface, consisting of a bidirectional data line and

a clock line. It behaves as a slave with respect to the I2C protocol.

The RF protocol is compatible with ISO/IEC 14443 Type A and NFC Forum Type 4 Tag.

The board is powered through the Arduino UNO R3 connectors. It also includes three LEDs

for general purpose.

The X-NUCLEO-NFC01A1 (MB1163) schematics, BOM, gerber files, drivers and firmware

are available for download on www.st.com.

Figure 1. Dynamic NFC tag expansion board based on M24SR for STM32 Nucleo

069

www.st.com

Description UM1793

2/9 DocID026566 Rev 2

1 Description

The X-NUCLEO-NFC01A1 board contains the M24SR64-Y chip. It is a dynamic NFC/RFID

tag IC. It features a 64 Kbit EEPROM memory, preformatted for NFC transactions, and

which can be protected by a unique and flexible 128-bit password scheme. The memory

bank can be accessed by any of its two interfaces, either from an I2C interface or by a

13.56 MHz passive NFC interface. The I2C interface is a two-wire serial interface, consisting

of a bidirectional data line and a clock line. It behaves as a slave with respect to the I2C

protocol. The NFC interface is based on the ISO/IEC 14443 type A and NFC Forum type 4

tag specifications. Because it is a passive RF interface, it operates when the board is

powered on but also when the board is powered off. Two control pins are also available from

the M24SR64-Y chip, allowing flexible management of the NFC interface.

DocID026566 Rev 2 3/9

UM1793 Features

2 Features

Ready-to-use printed circuit board (PCB) including:

•M24SR64-Y dynamic NFC/RFID tag

•31 mm x 30 mm 13.56 MHz double layer inductive antenna etched on the PCB

(ANT14)

•Different color LEDs

•Arduino UNO R3 connectors for Nucleo Board.

Hardware and layout description UM1793

4/9 DocID026566 Rev 2

3 Hardware and layout description

The X-NUCLEO-NFC01A1 board contains the M24SR64-Y chip. In addition to basic

functionalities (NFC & I2C) of this dynamic NFC/RFID tag IC, some LEDs driven by MCU

GPIOs can be used for global purpose.

Figure 2. Functional block diagram

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DocID026566 Rev 2 5/9

UM1793 Hardware and layout description

3.1 X-NUCLEO-NFC01A1 assembly drawing.

Figure 3. Top assembly view

3.2 X-NUCLEO-NFC01A1 board powering and startup

Proceed as follow:

1. Plug the X-NUCLEO-NFC01A1 on a Nucleo STM32 board

2. Connect the Nucleo board to a PC via the Type A / mini B USB cable

3. Download firmware in STM32 microcontroller

4. The demonstration kit is ready to be used

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Electrical schematics UM1793

6/9 DocID026566 Rev 2

4 Electrical schematics

Figure 4. Electrical schematics

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DocID026566 Rev 2 7/9

UM1793 An overview of FCC regulations

5 An overview of FCC regulations

5.1 Part 15.105

This equipment has been tested and found to comply with the limits for a Class B digital

device, pursuant to part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates uses and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not occur in a

particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the user

is encouraged to try to correct the interference's by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and the receiver.

•Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

5.2 Part 15.21

Any changes or modifications to this equipment not expressly approved by

STMicroelectronics may cause, harmful interference and void the FCC authorization to

operate this equipment.

Revision history UM1793

8/9 DocID026566 Rev 2

6 Revision history

Table 1. Document revision history

Date Revision Changes

19-Jun-2014 1 Initial release.

31-Oct-2014 2

Updated Figure 1: Dynamic NFC tag expansion board

based on M24SR for STM32 Nucleo.

Updated Figure 3: Top assembly view.

Updated Figure 4: Electrical schematics.

Added Section 5: An overview of FCC regulations.

DocID026566 Rev 2 9/9

UM1793

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and

improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on

ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order

acknowledgement.

Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or

the design of Purchasers’ products.

No license, express or implied, to any intellectual property right is granted by ST herein.

Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.

ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

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