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MFRC522 Datasheet(PDF) 92 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) 92 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 3.2 — 22 May 2007
92 of 109
NXP Semiconductors
MFRC522
Contactless Reader IC
24. Application information
The figure below shows a typical circuit diagram, using a complementary antenna
connection to the MFRC522.
The antenna tuning and RF part matching is described in the application note Ref. 1 and
Ref. 2.
Fig 32. Typical Application Circuit Diagram
C0
L0
C2
C0
C2
L0
Lant
Antenna
R1
µ-
Processor
Host
Interface
IR
Q
DVDD
TVD
D
AVDD
27,12
MHz
C1
C1
PVDD
PVSS
Cvmid
CRx
RX
RC522
TX1
TX2
TVSS
NRSTPD
IRQ
DVSS
AVSS
OSCIN
OSCOUT
VMID
R2
Ra
Ra
supply



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