UM1793 datasheet(2/9 Pages) STMICROELECTRONICS

Part #	UM1793

Description	Dynamic NFC tag expansion board based on M24SR for STM32 Nucleo

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Description

UM1793

2/9

DocID026566 Rev 2

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.

UM1793 Datasheet(PDF) 2 Page - STMicroelectronics