Asset Publisher

AS3953 ISO 14443A Sensor Interface Tag

ISO 14443A to SPI Interface Tag IC


  • Direct NFC to SPI interface
  • 5mA energy harvest
  • 106 to 848kbit/s data transfer rate
  • Built-in 1kbit high endurance EEPROM (>1Mu write cycles)


  • Most cost efficient and easiest way to implement NFC
  • Power positive, longer battery lifetime, allows batteryless designs
  • Fast data transfer for firmware upgrades or data intense applications
  • Longest lifetime of EEPROM even in challenging environments

Product parameters

Frequency [MHz] 13.56
Protocol ISO 14443A NFCIP-1 target at 106kbps NFC Forum T4T emulation
Supply Voltage [V] RF field or ext. 1.65 to 3.6
Temperature Range [°C] -40 to +85
Interface ISO14443A \ 4-wire SPI (slave) up to 5MHz
EEPROM [kbit] 1
Features Passive wake-up interrupt Energy harvesting 5mA @ 3.3V
Data Rate [kbit/s] Up to 848
Package Die, MLPD-10, WL-CSP

General Description

The AS3953 NFiC™ enables all applications to interact with an NFC mobile phone in an instant. It is a fast NFC to SPI interface capable of harvesting field energy up to 5mA.

This product suits for the following applications:

  • Passive wake-up
  • Multipurpose HF interface to a controller
  • Low power or passive programming
  • Ultra low power data logger
  • RFID programmable configuration EEPROM
  • ISO 14443A smart card
  • NFC Forum Tag Type 4
  • Bluetooth and Wi-Fi pairing
  • Product initialization, service and maintenance
  • ISO 14443A Smart Cards
  • NFC Forum Tag Type 4
  • Passive wake up
  • Remote sensors
  • BT/BLE/Wi-Fi pairing
  • Low power data transfer


Title Category Headline Buy
AS3953DemoKitNFiC Application Board Demo Kit NFiC for AS3953
AS3953DemoKitTags Application Board Demo Kit Tags for AS3953
AS3955DemoKit Application Board Demo Kit for AS3955


Name Type Description Language Application Data Demokit data English Application Data Demonstrator data English Software Firmware source 1.3.2 English Software Eval GUI source v1.2.6 English Software Eval SW 1-2-6-0 English Software ams NFC transfer v1.0 English Software ams NFC transfer App source v1.0.0 English

Technical Documents

Name Type Description Version Language
AS3953_BD000311_1-00.png Block Diagram AS3953 Block Diagram 1-00 English
AS3953_DS000383_1-00.pdf Datasheet Document version 1-04; AS3953A 1-00 English
AS3953_DS000410_1-00.pdf Datasheet Document version 1-04; AS3953B 1-00 English
AS3953_FS000100_1-00.pdf Factsheet The Missing Link 1-00 English
AS3953_PD000311_1-00.png Other Product Document AS3953DemoKitNFiC Image 1-00 English
AS3953_PD000312_1-00.png Other Product Document AS3953DemoKitTags Image 1-00 English
AS3953_PB000100_3-00.pdf Product Brief 3-00 English
AS3953_UG000140_1-00.pdf User Guide Demo board - General purpose 1-00 English

Asset Publisher

Related Products