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MFRC522 Datasheet(PDF) 88 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) 88 Page - NXP Semiconductors

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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 3.2 — 22 May 2007
88 of 109
NXP Semiconductors
MFRC522
Contactless Reader IC
23.3 RX Input Voltage Range
Figure 29 outlines the voltage definitions.
23.4 RX Input Sensitivity
Figure 29 outlines the voltage definitions.
23.5 Clock Frequency
Table 169: RX Input Voltage Range
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VRX,MinIV,Man Minimum Input voltage,
Manchester Coded
AVDD = 3 V
-
100
-
mVpp
VRX,MaxIV,Man Maximum Input voltage,
Manchester Coded
AVDD =3V
-
4
-
Vpp
Fig 29. RX Input Voltage Range
Vmid
0V
-1V
AVDD+1V
V
in,RX
Input Voltage Range
V
RX,IV,man
V
RXMod,man
13.56MHz
carrier
Manchester Coded Signals
Table 170: RX Input Sensitivity
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VRXMod,Man Minimum
modulation voltage
AVDD = 3 V, RxGain = 7
-
5
-
mV
Table 171: Clock Frequency
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSCIN
Clock Frequency
-
27.12
-
MHz
dFEC
Duty Cycle of Clock
Frequency
40
50
60
%
tjitter
Jitter of Clock Edges
-
-
10
ps, RMS



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