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MFRC522 Fiches technique(PDF) 78 Page - NXP Semiconductors

No de pièce MFRC522
Description  Contactless reader IC
PDF  96 Pages
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Fabricant  NXP [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo NXP - NXP Semiconductors

MFRC522 Fiches technique(HTML) 78 Page - NXP Semiconductors

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MFRC522_33
© NXP B.V. 2009. All rights reserved.
Product data sheet
PUBLIC
Rev. 3 — 26 October 2009
112133
78 of 96
NXP Semiconductors
MFRC522
Contactless reader IC
15. Application information
A typical application diagram using a complementary antenna connection to the
MFRC522 is shown in Figure 27.
The antenna tuning and RF part matching is described in the application note Ref. 1 and
Ref. 2.
Fig 27. Typical application diagram
001aaj636
DVDD
AVDD
supply
MICRO-
PROCESSOR
host
interface
TVDD
OSCIN
OSCOUT
27.12 MHz
RX
VMID
antenna
TX1
TVSS
TX2
PVDD
2
315
12
21
22
17
16
11
10, 14
13
4
5
6
23
18
PVSS
NRSTPD
IRQ
AVSS
DVSS
MFRC522
R1
L0
C1
Ra
Ra
C1
L0
R2
C0
C0
C2
C2
Lant
CRx
Cvmid



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