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Special microcontroller for RFID (Radio Frequency Identification) intelligent card

A micro-controller and smart card technology, which is applied in the direction of micro-control devices, instruments, and record carriers used by machines, can solve the problems that cannot fully meet the strict requirements of RFID smart card chips for microcontrollers, and it is difficult to directly apply RFID smart cards. Low operating power consumption, improved efficiency, and high execution efficiency

Inactive Publication Date: 2014-11-12
SYSU HUADU IND SCI & TECH INST
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Problems solved by technology

[0010] At present, many existing microcontrollers compatible with the MCS-51 instruction set usually cannot meet or cannot fully meet the stringent requirements of the above-mentioned RFID smart card chips for microcontrollers.
Therefore, it is difficult for the existing MCS-51 compatible microcontrollers to be directly applied to the field of RFID smart cards.

Method used

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  • Special microcontroller for RFID (Radio Frequency Identification) intelligent card
  • Special microcontroller for RFID (Radio Frequency Identification) intelligent card
  • Special microcontroller for RFID (Radio Frequency Identification) intelligent card

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Embodiment Construction

[0028] A microcontroller dedicated to RFID smart cards of the present invention will be further elaborated below in conjunction with the accompanying drawings.

[0029] A microcontroller dedicated to RFID smart cards is fully compatible with the MCS-51 instruction set, and its internal structure is composed of a central processing unit 10 and internal peripherals 20, as shown in the attached figure 1 shown. The central processing unit 10 is mainly composed of a state generator 11 , a program counter 12 , an instruction fetching unit 13 , an instruction decoder 14 , an arithmetic logic unit 15 and a special function register 16 . Internal peripherals 20 refer to peripherals integrated in the microcontroller, mainly composed of timer counters 21 and interrupt controllers 22 . The basic workflow of the microcontroller is: the instruction fetching unit 13 fetches the instruction from the program memory according to the address provided by the program counter 12 and stores it in t...

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Abstract

The invention relates to a special microcontroller for an RFID (Radio Frequency Identification) intelligent card, which comprises an internal structure formed by a central processing unit and internal peripherals, wherein the central processing unit mainly comprises a state generator, a program counter, an instruction fetching component, an instruction decoder, an arithmetical logic unit and a special function register; the internal peripherals are peripherals integrated in the microcontroller and mainly comprise a timing counter and an interrupt control unit. Compared with the prior art, the invention has the advantages of high execution efficiency, low running power consumption, strong expansion capability and small chip area, can meet the harsh demands of an RFID intelligent card chip on the microcontroller and can be applied to the field of passive RFID intelligent card chips.

Description

technical field [0001] The invention relates to the field of microcontrollers, in particular to a microcontroller applied to RFID smart cards. Background technique [0002] RFID is the abbreviation of Radio Frequency Identification, that is, radio frequency identification technology. RFID radio frequency identification is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not require manual intervention and can work in various harsh environments. RFID technology can identify high-speed moving objects and can identify multiple tags at the same time, and the operation is fast and convenient. [0003] Smart Card is a general term for a plastic card embedded with an integrated circuit chip. According to the different types of embedded chips, IC cards can be divided into three categories: memory cards, logical encryption cards, and CPU cards, but...

Claims

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Application Information

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IPC IPC(8): G06F9/22G06K19/07
Inventor 谭洪舟胡建国丁颜玉王德明钟伟
Owner SYSU HUADU IND SCI & TECH INST
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