NF4

NFC Forum Type 4 Dual Interface Contact Contactless 8kB / 32kB / 64kB Flash Based Memory IC

Description

The NF4 chip is an NFC Forum Type 4 dual interface tag IC. It is intended for use in applications requiring a dual communication interface, contact and contactless, read/write memory with optionally security features to protect data privacy and integrity. The contactless interface is based on ISO/IEC14443 standard Type A. The chip supports all protocol layers. The robust and sensitive contactless interface permits complete transactions at minimum operating field strength of 0.7A/m. The NFC reader device can select any communication data rates from 106k bps up to 848k bps. The 2-wires serial contact interface is composed by a bi-directional IO data line and a slave clock (1 clock per bit). The chip security features are based on AES-128 cryptography. In order to enforce the confidentiality level of the data exchanged between the reader and the NF4 chip, the contactless communication can be optionally encrypted including also a Message Authentication Code (MAC). The chip maximizes flexibility in terms of access conditions to memory data. The IC supports all the ISO/IEC14443 -3/-4 commands and a transport layer based on an optimized ISO/IEC 7816-4 command set. Each NF4 chip has a 7 byte unique serial number, programmed at wafer level, which guaranties the uniqueness of each device. An optional Random ID feature according to ISO/IEC14443-3 can be enabled in the application or during the product personalization. In case of a passive application, without battery assistance, the NF4 chip offers energy harvesting capabilities in order to power supply an external device like a microcontroller or a digital sensor

Features 

- NFC Forum Type 4 compliant tag IC

- Supports ISO/IEC14443 Type A

- RF data rates from 106kbps up to 848kbps

- 8kB, 32kB or 64kB user’s data NVM memory

- 7 Byte Unique Identifier number (UID)

- Optional Random ID to enhance security and product privacy

- Chip security based on AES-128 crypto algorithm

- Optional Secure Messaging (SM). Encryption of the RF communication channel

- Optional Message Authentication Code (MAC)

- 2-wires serial interface (clock and data).

- Serial interface data rates up to 1MHz

- RF Busy line indicates presence of an on-going contactless communication

- RF field detector available on VPOS

- Energy harvesting capability – extracting energy from the electromagnetic field (up to 2mA)

- Possibility to create proprietary application files

- ISO/IEC7816-4 optimized command set

- On-chip resonant capacitor: 14pF

- Optimized resonant frequency of 14.5MHz

- Minimum operating field strength of 0.7A/m

- -25°C to +85˚C temperature range

- Available in SO8 package or standard or bumped wafers form

Applications 

- Healthcare market segment

- NFC pairing

- Smart and Secure metering

- Product personalization and diagnostic tool

- Smart Sensors – Data logger

- NFC tags with large memory capabilities

- Consumer

- Home appliance

- Automation, Industrial