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MFRC52201HN1-MFRC52202HN1
Standard 3V MIFARE reader solution, v1.0
1. IntroductionThis document describes the functionality and electrical specifications of the contactless
reader/writer MFRC522.
Remark: The MFRC522 supports all variants of the MIFARE Mini, MIFARE 1K,
MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus RF
identification protocols. To aid readability throughout this data sheet, the MIFARE Mini,
MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus
products and protocols have the generic name MIFARE.
2. General descriptionThe MFRC522 is a highly integrated reader/writer IC for contactless communication 13.56 MHz. The MFRC522 reader supports ISO/IEC 14443 A/MIFARE mode.
The MFRC522’s internal transmitter is able to drive a reader/writer antenna designed to
communicate with ISO/IEC 14443 A/MIFARE cards and transponders without additional
active circuitry. The receiver module provides a robust and efficient implementation for
demodulating and decoding signals from ISO/IEC 14443 A/MIFARE compatible cards and
transponders. The digital module manages the complete ISO/IEC 14443 A framing and
error detection (parity and CRC) functionality.
The MFRC522 supports MF1xxS20, MF1xxS70 and MF1xxS50 products. The MFRC522
supports contactless communication and uses MIFARE higher transfer speeds up to
848 kBd in both directions.
The following host interfaces are provided:
Serial Peripheral Interface (SPI)
Serial UART (similar to RS232 with voltage levels dependant on pin voltage supply)
I2 C-bus interface
2.1 Differences between version 1.0 and 2.0The MFRC522 is available in two versions:
MFRC52201HN1, hereafter referred to version 1.0 and
MFRC52202HN1, hereafter referred to version 2.0.
The MFRC522 version 2.0 is fully compatible to version 1.0 and offers in addition the
following features and improvements:
MFRC522
Standard 3V MIFARE reader solution
Rev. 3.7 — 26 March 2014
Product data sheet
COMPANY PUBLIC
NXP Semiconductors MFRC522
Standard 3V MIFARE reader solution Increased stability of the reader IC in rough conditions
An additional timer prescaler, see Section 8.5.
A corrected CRC handling when RX Multiple is set to 1
This data sheet version covers both versions of the MFRC522 and describes the
differences between the versions if applicable.
3. Features and benefits Highly integrated analog circuitry to demodulate and decode responses Buffered output drivers for connecting an antenna with the minimum number of
external components Supports ISO/IEC 14443 A/MIFARE Typical operating distance in Read/Write mode up to 50 mm depending on the
antenna size and tuning Supports MF1xxS20, MF1xxS70 and MF1xxS50 encryption in Read/Write mode Supports ISO/IEC 14443 A higher transfer speed communication up to 848 kBd Supports MFIN/MFOUT Additional internal power supply to the smart card IC connected via MFIN/MFOUT Supported host interfaces SPI up to 10 Mbit/sI2 C-bus interface up to 400 kBd in Fast mode, up to 3400 kBd in High-speed mode RS232 Serial UART up to 1228.8 kBd, with voltage levels dependant on pin
voltage supply FIFO buffer handles 64 byte send and receive Flexible interrupt modes Hard reset with low power function Power-down by software mode Programmable timer Internal oscillator for connection to 27.12 MHz quartz crystal 2.5 V to 3.3 V power supply CRC coprocessor Programmable I/O pins Internal self-test
4. Quick reference data
Table 1. Quick reference data
NXP Semiconductors MFRC522
Standard 3V MIFARE reader solution
[1] Supply voltages below 3 V reduce the performance in, for example, the achievable operating distance.
[2] VDDA, VDDD and VDD(TVDD) must always be the same voltage.
[3] VDD(PVDD) must always be the same or lower voltage than VDDD.
[4] Ipd is the total current for all supplies.
[5] IDD(PVDD) depends on the overall load at the digital pins.
[6] IDD(TVDD) depends on VDD(TVDD) and the external circuit connected to pins TX1 and TX2.
[7] During typical circuit operation, the overall current is below 100 mA.
[8] Typical value using a complementary driver configuration and an antenna matched to 40 between pins TX1 and TX2 at 13.56 MHz.
5. Ordering information
[1] Delivered in one tray.
[2] Delivered in five trays.
Table 1. Quick reference data …continued
Table 2. Ordering information
NXP Semiconductors MFRC522
Standard 3V MIFARE reader solution
6. Block diagram
The analog interface handles the modulation and demodulation of the analog signals.
The contactless UART manages the protocol requirements for the communication
protocols in cooperation with the host. The FIFO buffer ensures fast and convenient data
transfer to and from the host and the contactless UART and vice versa.
Various host interfaces are implemented to meet different customer requirements.
NXP Semiconductors MFRC522
Standard 3V MIFARE reader solution
