ISO14443A contactless card reading technology based on MFRC530

This article introduces the main features, block diagram, receiver circuit block diagram, timer module block diagram, as well as the connection block diagram with the microprocessor and the typical application circuit diagram. 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 (eg 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 key features:

• Highly integrated analog circuitry to demodulate and de code 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, optimized 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


Figure 1. MF RC530 block diagram

Figure 2. MF RC530 receiver circuit block diagram

Figure 3. MF RC530 timer module block diagram

Figure 4. MF RC530 with common read/write strobe and microprocessor connection diagram

Figure 5. MF RC530 single read/write strobe connection block diagram with microprocessor

Figure 6. MF RC530 application circuit diagram with direct matching antenna