Which ST25 IC do I need?

[Waller.George]

I need to specify an RFID IC for bidirectional data exchange with an Android mobile phone. I will be using the NFC to update the firmware on an MCU in the system with a flash size of 32kB. The other application is the for the system to transfer up to 64kB of data to the phone. I'm finding it difficult to understand the differences between the ST25 chips, some use case examples would be helpful. Thanks for any advice.

[France Berthelot · Accepted solution]

Hello

Please see following IC ST25DVxxx which offer a fast transfer mode between the RF and contact worlds, thanks to a 256 bytes volatile buffer (also called Mailbox).

https://www.st.com/en/nfc/st25dv-i2c-series-dynamic-nfc-tags.html?querycriteria=productId=SS1950

We provide also a reference implementation of some Android use cases which demonstrates FW update, Pictures transfer or simple data exchange.

https://www.st.com/content/st_com/en/products/embedded-software/st25-nfc-rfid-software/stsw-st25001.html

The ST25DV-DISCOVERY is a demonstration kit to evaluate the features and capabilities of the ST25DV series. It is based on the NFC ST25DV04K device embedded on a daughter card using a Class 5 antenna and a STM32 processor driving a mother board. A dedicated software stored in the Flash memory is provided.

https://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/st25-nfc-rfid-eval-tools/st25-nfc-rfid-eval-boards/st25dv-discovery.html

Hope we have provided main keys inputs regarding your request.