28 Feb '14, 5pm

Great #eetimeseurope article on NTAG I2C from #ew14

Great #eetimeseurope article on NTAG I2C from #ew14

NFC tag powers richer user interfaces February 28, 2014 // Julien Happich At Embedded World, NXP was demonstrating a new kind NFC tag, the NTAG I2C, offering not only a passive NFC Forum compliant contactless interface but also an I²C contact interface together with energy harvesting circuitry. Page 1 of 3 The latter enables the chip to communicate with a microcontroller and power small electronics (like LEDs) as it harvests energy from a reader such as an NFC-enabled smartphone. What’s more, an additional externally powered 64-byte SRAM memory buffer mapped into the memory allows a fast data transfer between the RF and I²C interfaces and vice versa, without the write cycle limitations of the EEPROM memory. Practically, this means that the NTAG I2 C can exchange data over the air (from the NFC tag’s memory to the reader), but also over its I²C interface with the electronic...

Full article: http://www.electronics-eetimes.com/en/nfc-tag-powers-user...

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