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 I
2
C interface or by a
13.56 MHz passive NFC interface. The I
2
C 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 I
2
C
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.
