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EETE DECEMBER 2012

DESIGN & PRODUCTS RFID & E-PAYMENT NFC chip targets next-generation Bi-directional NFC interface chip harvests mobile payments energy from RF emissions Qualcomm Atheros has released a near field communication Operating on energy harvested from an NFC reader’s RF (NFC) solution which will enable mobile devices with contact- emissions, the AS3953 NFiC (Near Field Communications less communications and data interface Chip) requires no external power source and at exchange, including next- most one external component (a capacitor). The device generation mobile payments. enables system designers to add full bi-directional NFC With an overall footprint capability at a total cost less than half that of a typical NFC claimed to be 50 percent reader implementation, which can require as many as 20 smaller than current NFC external components. The AS3953 is fully compliant with chips, the QCA1990 is a low NFC Forum specifications (NFCIP-1 target at 106kbps) and power 40nm SoC that offers the ISO14443A industry standard (up to 848kbps, to Level platform-level integration with Snapdragon S4 and S5 proces- 4). This means that it can be used in contactless smart cards sors and modems to seamlessly enable NFC on Qualcomm’s and as an NFC Forum-compatible interface tag, and can es- OEM partner smartphones and tablets. The QCA1990 software tablish instant communication with any NFC-enabled phone stack complies with the NFC Forum Controller Interface (NCI) in close proximity (<10cm). The AS3953 is expected to find and is fully integrated to enable faster time-to-market for cus- uses in a wide variety of applications, including contact- tomers. Its radio frequency performance exceeds requirements less passive programming of MCU-based systems, smart established by EMVCo and the NFC Forum, says the manu- cards with displays, smart retail shelf labels, sensors and facturer. With supported antenna form factors that are eight ultra low-power data loggers, medical devices, and secured times smaller than current market offerings, QCA1990 offers NFC Bluetooth pairing. It can also enable innovative new significant cost savings for OEMs to integrate NFC at a signifi- approaches to system designs by using an NFC-enabled cantly lower price point. The QCA1990 is pre-tested to meet smartphone as a display host and system controller for the requirements from payment schemes, mobile operators and normally stand-alone devices, eliminating the requirement for OEMs globally. The QCA1990 will sample to customers starting the slave device to have its own display and processor. The first quarter 2013. AS3953 features a configurable wake-up interrupt, enabling Qualcomm Atheros a zero-power system design while in shut down. It also con- www.qca.qualcomm.com tains a complete analog front end, 1kB of internal EEPROM, and a 4-wire SPI with a 32-byte FIFO. The device can draw Smart paper ticketing IC offers three up to 5mA of harvested energy from the external magnetic field, and includes an internal power management circuit independent 24-bit one-way counters that can supply harvested energy to the application. This The MIFARE Ultralight EV1 from NXP Semiconductors is makes the AS3953 suitable for use with battery-powered and the company’s next generation of contactless paper ticket- portable microcontroller-based devices. The AS3953 NFiC ing ICs, a non-cryptographic product which addresses the comes as a bare die or in a 10-pin, 3x3mm MLPD package. demand for low-value or disposable tickets. Leveraging ams smart paper tickets, transport operators can offer day passes www.ams.com or limited-use tickets for tourists and occasional travellers. Additionally, smart paper tickets enable public transport operators to run a fully integrated contactless system with ISO 15693 compliant HF-band RFID tags only one reader infrastructure for cards and tickets, freeing measure only 3.2x3.2x0.7mm them from the need to maintain systems for both mag-stripe and barcode-based tickets. The new features of MIFARE Operating in the 13.56 MHz band also used by contactless IC Ultralight EV1, such as three independent 24 bit one-way cards, the LXMS33HCNG-134 tag from Murata measures just counters, are enabling transport operators to integrate flex- 3.2x3.2x0.7mm. Compliant with ISO 15693 standard, the tag ible ticket tariff schemes through enhancing trip counting, re- can be used with any reader / writer loading, limited stored values and expiry date management. that conforms to the same standard. One application example is the use of multiple counters for a The tag is suitable for use in most zone- or mileage-based tariff scheme in a check-in / check- operating environments including out system. Another application is the smart combination of high temperature and high humidity trip- and reload-counting. In addition, a new 32-bit password so it suits a wide range of appli- protects data from being accessed without authorization. ance and object tracking, certifica- The NXP ‘originality signature’ enables vendor verification of tion and authentication applications. Normally, an RFID device each single IC – this contributes to a more reliable system requires an antenna and the IC tag and due to the frequencies and allows transport operators to identify and reject tickets involved the antenna tends to become extremely large. How- which are not qualified to work in the specific application. ever, by applying multi-layer circuit board and high-frequency Other specifications include a choice of 48 byte or 128 byte module techniques, Murata has been able to incorporate the freely programmable user memory, a configurable limit of antenna within the ceramic substrate. Using this approach, unsuccessful authentication attempts, and availability in a the LXMS33HCNG tag is extremely resistant to environmental 75µm or 120µm thin bumped wafer. conditional and is highly stable in operation. Read range, when NXP Semiconductors used with a 200mW reader/writer is typically 15mm. www.nxp.com Murata Europe www.murata.eu 32 Electronic Engineering Times Europe December 2012 www.electronics-eetimes.com


EETE DECEMBER 2012
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