AS3956 NFC Forum Compliant Dynamic Tag AS3956 NFC Dynamic Tag IC is the ultimate solution to easily General Description add NFC functionality to electronic devices. Thanks to a high sensitivity ISO14443A frontend and high integrated resonance capacitor, AS3956 offers standalone NFC passive tag functionality in a small footprint. Fast system integration and high speed data transfer are guaranteed by the available SPI and IC interfaces and by the optimized protocols (Tunneling Mode and Extended Mode), allowing bidirectional communication between the device microcontroller and an external NFC compliant device or ISO14443A reader device (PCD). AS3956 is able to operate fully powered by the RF field, without any external supply. This, combined with an advanced energy harvesting feature, greatly increases battery life time or even allows battery-less designs. AS3956 is used with an appropriate antenna coil connected to the terminals LC1 and LC2, and behaves as a standard passive ISO 14443A tag (PICC). After the anti-collision protocol stage, based on configuration, AS3956 can operate as a standalone NFC Forum Type 2 Tag or, when tunneling mode is activated, as a bridge between the PCD and the microcontroller, e.g. to emulate a custom or standard ISO14443A Level 3 or Level 4 PICC or a NFC Forum tag. A configurable wake-up signal notifies the microcontroller on ongoing RF activities, in order to minimize overall power consumption. AS3956 includes an embedded EEPROM memory that can be accessed from the PCD through the RF link or from the microcontroller through the SPI or IC interfaces. Part or all memory can be protected by a 32-bit password, or permanently locked. AS3956 supports ISO 14443A up to Level 4 and is designed according to EMVCo requirements, to enable the emulation of contactless smart cards or NFC Forum compliant Type 2 or Type 4 Tags. AS3956 is designed for high reliability, and can operate in a wide power supply range from 1.65V to 5.5V, in a wide temperature range from -40C to 125C. Ordering Information and Content Guide appear at end of datasheet. Mandatory Documentation Application Note AN02: Dual Interface Data Integrity ams Datasheet Page 1 v1-11 2018-Nov-14 Document FeedbackAS39 56 Gene ral Des c rip t ion Key Benefits & Features The benefits and features of AS3956, NFC Forum Compliant Dynamic Tag are listed below: Figure 1: Added Value of Using AS3956 Benefits Features Type 2 Tag standalone functionality NFC Forum compliance for full interoperability Type 4 Tag emulation with external MCU NFC Forum compliance Operating frequency at 13.56 MHz ISO 14443A compliance up to Level 3 - stand alone Bit rate at 106 kbps ISO 14443A compliance up to Level 4 with ext. 7-byte UID micro Choice of memory size based on application 4 kbit EEPROM (472 bytes of user data) Allows zero-power standby Configurable passive wake-up interrupt Enables long battery life time, or battery-less Energy harvesting to supply up to 5mA (regulated) designs Allows fast antenna prototyping (ISO antenna 45 pF integrated resonant capacitor classes 1 to 6) 3/4-wire SPI slave interface up to 5 Mbps Design flexibility, easy integration. Fits requirements for various embedded applications IC slave interface up to 1 Mbps Design flexibility, easy integration Programmable IC address Fits supply requirements for various applications, Wide interface supply range (1.65V to 5.5V) including industrial Support for multiple applications, and storage of 32-bit password memory protection sensitive data High performance and robust data Tunneling and Extended modes for MCU communication, allows custom protocols to be communication implemented Consistent NFC behavior of battery supplied Silent mode (MCU power status detection), devices in e.g. pairing applications configurable between 1.42V and 3.65V Possibility to disable RF communication Configurable Chip Kill mode Small outline, compatibility to common inlay and WL-CSP package card manufacturing lines, surface-mount 10-pin MLPD 3mm x 3mm package assembly Page 2 ams Datasheet Document Feedback v1-11 2018-Nov-14