Data Sheet
PN512_C1_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product short data sheet
COMPANY PUBLIC
Rev. 3.2 — 20 September 2012
120132 9 of 27
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
7.1.3 Reader/Writer modes
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
optimal performance.
7.1.3.1 ISO/IEC 14443A Reader/Writer
The following diagram describes the communication on a physical level, the
communication overview in the Table 3
describes the physical parameters.
The internal CRC co-processor calculates the CRC value according the data coding and
framing defined in the ISO/IEC 14443A part 3, and handles parity generation internally
according to the transfer speed.
With appropriate firmware, the PN532 can handle the complete ISO/IEC 14443A/MIFARE
protocol.
Fig 3. ISO/IEC 14443A/MIFARE Reader/Writer communication diagram
Table 3. Communication overview for ISO/IEC 14443A/MIFARE Reader/Writer
Communication scheme ISO/IEC 14443A
MIFARE
MIFARE Higher Baud Rate
Baud rate 106 kbit/s 212 kbit/s 424 kbit/s
Bit length
PN532 to
PICC/Card
Modulation 100% ASK 100% ASK 100% ASK
Bit coding Modified Miller
coding
Modified
Miller coding
Modified
Miller coding
PICC/Card to
PN532
Modulation Subcarrier load
modulation
Subcarrier load
modulation
Subcarrier load
modulation
Subcarrier
frequency
13.56 MHz
⁄
16
13.56 MHz
⁄
16
13.56 MHz
⁄
16
Bit coding Manchester coding BPSK BPSK
1. PCD to PICC 100% ASK,
Miller Coded,
Transfer speed 106 to 424 kbit/s
2. PICC to PCD, Subcarrier Load modulation,
Manchester Coded or BPSK,
Transfer speed 106 to 424 kbit/s
Reader/Writer
PN532
HOST
Battery
ISO/IEC 14443A
Card / PICC
128
13.56MHz
--------------------------
9.44s
64
13.56MHz
--------------------------
4.72s
32
13.56MHz
--------------------------
2.36s