AS3953A - ams

AS3953A 14443 High Speed Passive Tag Interface

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 .

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 capacitor
4-wire Serial Peripheral Interface (SPI) with 32 byte FIFO
Wide SPI power supply range (1.65V to 3.6V)
Wide temperature range: -40ºC.