where to get blank NFC card to write image developed by STM32L476RG and X-NUCLEO-NFC07A1 board

[dingchaojie]

I'm developing a new secret card project using STM32L476RG and X-NUCLEO-NFC07A1 board, 

I plan to let the secret card to store private key and do signature related tasks. I'm not sure where can I get blank card which contains the same MCU with STM32L476RG) and the same NFC7 with X-NUCLEO-NFC07A1? I found there are blank card in sale support NFC ISO 14443 protocol. Seem the NFC7 using ISO 15693 protocol. So the NFC blank card support support ISO 15693 protocol can run my image, as showed in image below?

Thanks

Jack Ding.

[Brian TIDAL]

Hi,

nice project, thanks for sharing it.

The X-NUCLEO-NFC07A1 board is based on ST25DV‑I2C (ISO 15693 / NFC‑V tag).
This device is an NFC/RFID memory tag with I²C interface, not a microcontroller.
The STM32L476RG on your NUCLEO board runs your firmware, while the ST25DV is only used as a contactless memory (EEPROM) that can be accessed either:

• from the STM32 via I²C, and
• from an NFC reader / phone via ISO 15693 (NFC‑V).

Because of that:

1. There is no “blank card” that contains the same MCU + NFC7 circuitry.
   The combination “STM32L476RG + ST25DV” is a board design, not a standard NFC card product.

2. Standard NFC cards using ISO 14443 (NFC‑A/B) are not compatible with your current firmware/example, which targets ISO 15693 (NFC‑V).
   An ISO 14443 card cannot be used as a drop‑in replacement for the ST25DV‑I2C tag.

According to your security requirements level, you may consider using a ST25TA-E Secure Tag or adding a secure element (e.g. STSAFE authentication and secure data management services device) to your design.

Rgds

BT