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AS3953A - 14443 High Speed Passive Tag Interface

General Description

The AS3953A NFC interface IC (NFiC) delivers low cost, ultra low power NFC forum functionality to multiple different applications.

The AS3953A is a analog front-end with integrated 14443A data framing and SPI interface.

Key Features

  • ISO 14443A compliant to Level-4.
  • NFCIP-1 target at 106 kb/s.
  • 1k bit EEPROM (108 bytes of user memory).
  • Configurable wake-up interrupt (after tag is selected or using proprietary command).
  • Powered from external magnetic field with the possibility to draw up to 5mA.
  • 7 byte UID.
  • User configurable regulated voltage extracted from external magnetic field.
  • Bit rates from 106 Kbps till 848 Kbps.
  • Integrated resonant capacitor.
  • Integrated buffer capacito.

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Datasheet Details

Part number AS3953A
Manufacturer ams
File Size 843.03 KB
Description 14443 High Speed Passive Tag Interface
Datasheet download datasheet AS3953A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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AS3953A 14443 High Speed Passive Tag Interface 1 General Description The AS3953A NFC interface IC (NFiC) delivers low cost, ultra low power NFC forum functionality to multiple different applications. The AS3953A is a analog front-end with integrated 14443A data framing and SPI interface. It is designed to create a fast data link between an ISO 14443A reader device (PCD) and a microcontroller. The AS3953A is Passively powered meaning that it can be supplied from the PCD magnetic field, eliminating the need of a continual external supply. This makes the AS3953A perfect for wireless communication to a low-power battery powered device. The AS3953A is used with an appropriate antenna coil connected to the terminals LC1 and LC2, and behaves as a normal passive ISO 144443A tag (PICC).