Datasheet

PN512 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 5.2 — 16 June 2016
111352 14 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
7. Functional description
The PN512 transmission module supports the Read/Write mode for
ISO/IEC 14443 A/MIFARE and ISO/IEC 14443 B using various transfer speeds and
modulation protocols.
PN512 NFC frontend supports the following operating modes:
• Reader/Writer mode supporting ISO/IEC 14443A/MIFARE and FeliCa scheme
• Card Operation mode supporting ISO/IEC 14443A/MIFARE and FeliCa scheme
• NFCIP-1 mode
The modes support different transfer speeds and modulation schemes. The following
chapters will explain the different modes in detail.
Note: All indicated modulation indices and modes in this chapter are system parameters.
This means that beside the IC settings a suitable antenna tuning is required to achieve the
optimum performance.
7.1 ISO/IEC 14443 A/MIFARE functionality
The physical level communication is shown in Figure 7.
The physical parameters are described in Table 4.
Fig 6. PN512 Read/Write mode
001aan218
BATTERY
reader/writer
contactless card
MICROCONTROLLER
PN512 ISO/IEC 14443 A CARD
Fig 7. ISO/IEC 14443 A/MIFARE Read/Write mode communication diagram
Table 6. Communication overview for ISO/IEC 14443 A/MIFARE reader/writer
Communication
direction
Signal type Transfer speed
106 kBd 212 kBd 424 kBd
Reader to card (send
data from the PN512
to a card)
reader side
modulation
100 % ASK 100 % ASK 100 % ASK
bit encoding modified Miller
encoding
modified Miller
encoding
modified Miller
encoding
bit length 128 (13.56 s) 64 (13.56 s) 32 (13.56 s)
(1)
(2)
001aan219
PN512
ISO/IEC 14443 A CARD
ISO/IEC 14443 A
READER