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MFRC523 Datasheet(PDF) 8 Page - NXP Semiconductors

Part No. MFRC523
Description  Contactless reader IC
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Maker  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
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MFRC523 Datasheet(HTML) 8 Page - NXP Semiconductors

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MFRC523_33
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 5 March 2010
115233
8 of 98
NXP Semiconductors
MFRC523
Contactless reader IC
8.
Functional description
The MFRC523 transmission module supports the Read/Write mode for
ISO/IEC 14443 A/MIFARE and ISO/IEC 14443 B using various transfer speeds and
modulation protocols.
8.1 ISO/IEC 14443 A/MIFARE functionality
The physical level communication is shown in Figure 5.
The physical parameters are described in Table 4.
The MFRC523’s contactless UART and dedicated external host must manage the
complete ISO/IEC 14443 A/MIFARE protocol. Figure 6 shows the data coding and
framing according to ISO/IEC 14443 A/MIFARE.
Fig 4.
MFRC523 Read/Write mode
001aal156
BATTERY
reader/writer
contactless card
MICROCONTROLLER
MFRC523
ISO/IEC 14443 A CARD
Fig 5.
ISO/IEC 14443 A/MIFARE Read/Write mode communication diagram
(1)
(2)
001aal157
MFRC523
ISO/IEC 14443 A CARD
ISO/IEC 14443 A
READER
Table 4.
Communication overview for ISO/IEC 14443 A/MIFARE reader/writer
Communication
direction
Signal type
Transfer speed
106 kBd
212 kBd
424 kBd
848 kBd
Reader to card (send
data from the
MFRC523 to a card)
reader side
modulation
100 % ASK
100 % ASK
100 % ASK
100 % ASK
bit encoding
modified Miller
encoding
modified Miller
encoding
modified Miller
encoding
modified Miller
encoding
bit length
128 (13.56
μs)
64 (13.56
μs)
32 (13.56
μs)
16 (13.56
μs)
Card to reader
(MFRC523 receives
data from a card)
card side
modulation
subcarrier load
modulation
subcarrier load
modulation
subcarrier load
modulation
subcarrier load
modulation
subcarrier
frequency
13.56 MHz / 16
13.56 MHz / 16
13.56 MHz / 16
13.56 MHz / 16
bit encoding
Manchester
encoding
BPSK
BPSK
BPSK


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