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ISO14443A writing

Jvan .23
Associate II

The datasheets front page mentions "Reader/Writer" as operating mode, but later only mentions " NFC-A / ISO14443A reader mode". Could you confirm that ISO14443A writing is supported?

1 ACCEPTED SOLUTION

Accepted Solutions
Brian TIDAL
ST Employee

Hi,

basically, a reader or a reader/writter is an NFC device emitting a 13.56 MHz magnetic

field and being able to send commands to a tag and to receive answers from the

tag.

“NFC-A / ISO14443A reader mode�? means that the NFC reader can communicate with ISO14443A tags and is able to send commands to such tags and to receive answers using the appropriate modulation.

Usually, a tag has an internal EEPROM memory, and it usually supports READ and WRITE command over NFC. Reading the tag memory or writing the tag memory is just achieved by commands sent by the user application of the NFC reader.

ST25R95 and other reader devices of the ST25R family are all able to communicate with ISO14443A tag devices. A Firmware library is provided for the various readers of the ST25R family with a complete set of API to communicate with tags.

Be aware that some ISO14443A tags may use proprietary commands and proprietary encryption.

For a simple application, I would recommend using standardized NFC T2T tags such as ST25TN tags which support standard READ and WRITE commands.

Feel free to provide more information regarding your application.

Rgds

BT

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4 REPLIES 4
Brian TIDAL
ST Employee

Hi,

which exact product are you refering to?

Rgds

BT

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
Jvan .23
Associate II

Hello Brian

Im refering to the st25r95-vmd5t

Brian TIDAL
ST Employee

Hi,

basically, a reader or a reader/writter is an NFC device emitting a 13.56 MHz magnetic

field and being able to send commands to a tag and to receive answers from the

tag.

“NFC-A / ISO14443A reader mode�? means that the NFC reader can communicate with ISO14443A tags and is able to send commands to such tags and to receive answers using the appropriate modulation.

Usually, a tag has an internal EEPROM memory, and it usually supports READ and WRITE command over NFC. Reading the tag memory or writing the tag memory is just achieved by commands sent by the user application of the NFC reader.

ST25R95 and other reader devices of the ST25R family are all able to communicate with ISO14443A tag devices. A Firmware library is provided for the various readers of the ST25R family with a complete set of API to communicate with tags.

Be aware that some ISO14443A tags may use proprietary commands and proprietary encryption.

For a simple application, I would recommend using standardized NFC T2T tags such as ST25TN tags which support standard READ and WRITE commands.

Feel free to provide more information regarding your application.

Rgds

BT

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
Jvan .23
Associate II

Okay, great. Thanks for the answer Brian