Datasheet

accepting a license agreement to download (https://adafru.it/aSA).

The NDEF format is used to store and exchange information like URIs, plain text, etc., using a commonly understood

format. NFC tags like Mifare Classic cards can be configured as NDEF tags, and data written to them by one NFC

device (NDEF Records) can be understood and accessed by any other NDEF compatible device. NDEF messages can

also be used to exchange data between two active NFC devices in "peer-to-peer" mode. By adhering to the NDEF

data exchange format during communication, devices that would otherwise have no meaningful knowledge of each

other or common language are able to share data in an organised, mutually understandable manner.

The NDEF standard includes numerous Record Type Definitions (RTDs) that define how information like URIs should

be stored, and each NDEF device, tag or message can contained multiple RTDs. Standard RTD definitions are

described in "NFC Record Type Definition (RTD) Specification” maintained by the NFC Forum.

* NDEF Overview (https://adafru.it/cl7): This page offers a more detailed explanation of NDEF, including how Mifare

Classic cards can be used to store NDEF messages.

NOTE: The dedicated NDEF page is still a work in progress and some information is currently incomplete.

Reading

For more details about NFC/RFID and this chip we suggest the following fantastic resources:

RFID selection guide (https://adafru.it/Cc3) - a lot of details about RFID in general

Nokia's Introduction to NFC (https://adafru.it/aSD)- a lot of details about NFC in general

NXP S50 chip datasheet (https://adafru.it/aSE) , the chip

inside

MiFare classic tags

NXP PN532 Short Form Datasheet (https://adafru.it/aSF)

NXP PN532 Long Form Datasheet (https://adafru.it/aSG)

NXP PN532 User Manual (https://adafru.it/aSH)

NXP PN532 App Note (https://adafru.it/Cc4)

Using PN532 with libnfc (https://adafru.it/aSJ)

NFC Glossary (https://adafru.it/aSK)