DocID029206 Rev 1

5/10

UM2053

Hardware description

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Hardware description

The ANT7-T-M24SR64 (see Figure 2) contains the M24SR64-Y EEPROM device and a

14 mm x 14 mm, 13.56 MHz dual layer etched antenna.

Figure 2. Functional block diagram

The M24SR64-Y is a dynamic NFC Forum Type 4 Tag – ISO/IEC 14443 with 25 pF internal

tuning capacitance. Memory size is 64 Kbits with NDEF support, that can be accessed

either by I2C interface or by 13.56 MHz air interface.

The tag features a user configurable digital output pin toggling during either RF or I2C

operation.

The M24SR64-Y also provides an input used to disable the RF communication.

As shown in Figure 1, all M24SR64-Y pins (except AC0 and AC1, related to antenna

connection) are made available to the user, with 1.2 mm diameter through-hole test points.

1.1

Startup

The ANT7-T-M24SR64 is already programmed with an URI that will automatically redirect to

the associated ST web-page.

User has to:

•

Enable NFC on the phone (Settings → Wireless and Networks → NFC) and make sure

it is also connected to the Internet

•

Bring the phone close to the ANT7-T-M24SR64 antenna to be redirected to the ST25

web-page.

Various usages of the ANT7-T-M24SR64 with a smartphone are allowed with ST25 NFC

Demo application for Android.

To download the application and for more use cases details user should visit the dedicated

It is also possible to access the M24SR64-Y memory with CR95HF demonstration board