基于MFRC530设计的ISO14443A无接触读卡技术
本文介绍了mfrc530主要特性,方框图, 接收器电路框图, 定时器模块框图,以及与微处理器的连接框图和典型应用电路图.nxp公司的mfrc530支持iso14443a通信方案所有层面的高度集成的13.56mhz无接触通信的读卡器ic,它采用杰出的调制和解调技术,内部的发送器能驱动接近100毫米距离的天线,接收器则能有效地实现对来自iso14443a兼容的转发器信号进行解调,数据速率高达424k波特.
the mf rc530 supports all layers of the iso14443a communication scheme.
the mf rc530 supports contactless communication using mifare® higher baudrates.
the internal transmitter part is able to drive an antenna designed for proximity operating distance (up to 100 mm) directly without additional active circuitry.
the receiver part provides a robust and efficient implementation of a demodulation and decoding circuitry for signals from iso14443a compatible transponders.
the digital part handles the complete iso14443a framing and error detection (parity & crc). additionally it supports the fast mifare® classic security algorithm to authenticate mifare classic (e.g. mifare® standard, mifare® light) products.
a comfortable parallel interface, which can be directly connected to any 8-bit μ-processor gives high flexibility for the reader/terminal design. additionally a spi compatible interface is supported.
mf rc530主要特性:
• highly integrated analog circuitry to demodulate and decode card response
• buffered output drivers to connect an antenna with minimum number of external components
• proximity operating distance (up to 100 mm)
• supports iso 14443a
• supports mifare® dual interface card ics and supports mifare® classic protocol
• supports contactless communication with higher baudrates up to 424kbaud
• crypto1 and secure non-volatile internal key memory
• pin-compatible to the mf rc500, mf rc531, sl rc400 and cl rc632
• parallel μ-processor interface with internal address latch and irq line
• spi compatible interface
• flexible interrupt handling
• automatic detection of parallel μ-processor interface type
• comfortable 64 byte send and receive fifo-buffer
• hard reset with low power function
• power down mode per software
• programmable timer
• unique serial number
• user programmable start-up configuration
• bit- and byte-oriented framing
• independent power supply pins for digital, analog and transmitter part
• internal oscillator buffer to connect 13.56 mhz quartz, optimised for low phase jitter
• clock frequency filtering
• 3.3 v to 5 v operation for transmitter (antenna driver) in short range and proximity applications
• 3.3 v or 5v operation for the digital part
图1.mf rc530方框图
图2.mf rc530接收器电路框图
图3.mf rc530定时器模块框图
图4.mf rc530带共同读/写选通的与微处理器的连接框图
图5.mf rc530单独读/写选通的与微处理器的连接框图
图6.mf rc530带直接匹配天线的应用电路图
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the mf rc530 supports all layers of the iso14443a communication scheme.
the mf rc530 supports contactless communication using mifare® higher baudrates.
the internal transmitter part is able to drive an antenna designed for proximity operating distance (up to 100 mm) directly without additional active circuitry.
the receiver part provides a robust and efficient implementation of a demodulation and decoding circuitry for signals from iso14443a compatible transponders.
the digital part handles the complete iso14443a framing and error detection (parity & crc). additionally it supports the fast mifare® classic security algorithm to authenticate mifare classic (e.g. mifare® standard, mifare® light) products.
a comfortable parallel interface, which can be directly connected to any 8-bit μ-processor gives high flexibility for the reader/terminal design. additionally a spi compatible interface is supported.
mf rc530主要特性:
• highly integrated analog circuitry to demodulate and decode card response
• buffered output drivers to connect an antenna with minimum number of external components
• proximity operating distance (up to 100 mm)
• supports iso 14443a
• supports mifare® dual interface card ics and supports mifare® classic protocol
• supports contactless communication with higher baudrates up to 424kbaud
• crypto1 and secure non-volatile internal key memory
• pin-compatible to the mf rc500, mf rc531, sl rc400 and cl rc632
• parallel μ-processor interface with internal address latch and irq line
• spi compatible interface
• flexible interrupt handling
• automatic detection of parallel μ-processor interface type
• comfortable 64 byte send and receive fifo-buffer
• hard reset with low power function
• power down mode per software
• programmable timer
• unique serial number
• user programmable start-up configuration
• bit- and byte-oriented framing
• independent power supply pins for digital, analog and transmitter part
• internal oscillator buffer to connect 13.56 mhz quartz, optimised for low phase jitter
• clock frequency filtering
• 3.3 v to 5 v operation for transmitter (antenna driver) in short range and proximity applications
• 3.3 v or 5v operation for the digital part
图1.mf rc530方框图
图2.mf rc530接收器电路框图
图3.mf rc530定时器模块框图
图4.mf rc530带共同读/写选通的与微处理器的连接框图
图5.mf rc530单独读/写选通的与微处理器的连接框图
图6.mf rc530带直接匹配天线的应用电路图
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