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Sep. 15, 2018
13.56Mhz NFC Card, the full name of English, Near Field Communication, is short-range wireless communication. The standard NFC communication frequency is 13.56MHz, the data transmission distance is generally within 10cm, high security, and the protocols to be followed are ISO14443A, ISO14443B and ISO15693. In the application, the NFC reader sends a specific electromagnetic wave to the carrier carrying the NFC chip (such as a Hotel NFC Card), and the series resonant circuit in the carrier body has the same frequency as that transmitted by the reader, and after receiving the electromagnetic wave of the reader/writer, The resonant circuit generates resonance, generates power and provides operating voltage for other circuits, and the NFC reader can complete data transmission and interaction with the carrier.
The NFC chip is the core part of the NFC smart card. The manufacturing process of smart cards mainly includes in-card integrated circuit design, software design, making circuits on monocrystalline silicon wafers, testing and writing information in E2PROM, grinding wafers, micro-modules, card manufacturing, card initialization, processing and distribution. . More than half of them are related to chip manufacturing.
The NFC chip is a semiconductor silicon wafer made by an advanced microfabrication method. Silicon wafers contain large scale integrated circuits.