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MFRC522 Datasheet(PDF) 9 Page - NXP Semiconductors

Part # MFRC522
Description  Contactless Reader IC
PDF  109 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFRC522 Datasheet(HTML) 9 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 3.2 — 22 May 2007
9 of 109
NXP Semiconductors
MFRC522
Contactless Reader IC
8.
Functional description
MFRC522 transmission module supports the Reader/Writer mode for
ISO/IEC 14443A/MIFARE® with different transfer speeds and modulation schemes.
The following diagram Figure 5 “ISO/IEC 14443A/MIFARE® Reader/Writer mode
communication diagram.” describes the communication on a physical level.
The communication overview in Table 4 “Communication overview for
ISO/IEC 14443A/MIFARE® reader/writer” describes the physical parameters.
Fig 4.
MFRC522 Reader/Writer mode.
Fig 5.
ISO/IEC 14443A/MIFARE® Reader/Writer mode communication diagram.
Table 4:
Communication overview for ISO/IEC 14443A/MIFARE® reader/writer
Communication
direction
ISO/IEC 14443A/ MIFARE®
transfer
speed
106 kbit/s
212 kbit/s
424 kbit/s
848 kbit/s
Reader
→ Card
(send data from the
MFRC522 to a
card)
Modulation
on reader
side
100% ASK
100% ASK
100% ASK
100% ASK
bit coding
Modified Miller
coding
Modified
Miller coding
Modified
Miller coding
Modified
Miller coding
Bitlength
(128/13.56)
μs (64/13.56) μs (32/13.56) μs (16/13.56) μs
ISO 14443A Card
RC522
Battery
µC
Reader/Writer
Contactless Card
ISO14443A
Reader
ISO14443A
Card
1. Reader to Card 100 % ASK ,
Miller Coded,
Transfer speed 106 to 848 kbit/s
2. Card to Reader, Subcarrier Loadmodulation
,
Manchester Coded or BPSK,
RC522
Transfer speed 106 to 848 kbit/s



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