mfrc500 NXP Semiconductors, mfrc500 Datasheet - Page 87

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mfrc500

Manufacturer Part Number
mfrc500
Description
Highly Integrated Iso14443a Reader Ic
Manufacturer
NXP Semiconductors
Datasheet

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Philips Semiconductors
Product Specification Rev. 3.2;December 2005
Highly Integrated ISO 14443A Reader IC
MF RC500
13.3 Pulse Width
The envelope carries the information of the data signal that shall be transmitted to the card done by coding
the data signal according to the Miller code. Furthermore, each pause of the Miller coded signal again is
coded as a pulse of certain length. The width of this pulse can be adjusted by means of the ModWidth
Register. The pulse length is calculated by
+
ModWidth
1
=
T
2
Pulse
f
C
where f
= 13.56MHz.
c
87
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