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 12 of 27
NXP Semiconductors
PN532/C1
Near Field Communication (NFC) controller
7.1.3.3 ISO/IEC 14443B Reader/Writer
The CIU supports layers 2 and 3 of the ISO/IEC 14443 B Reader/Writer communication
scheme, except anticollision which must be implemented in firmware as well as upper
layers.
The following diagram describes the communication at the physical level. Table 7
describes the physical parameters.
With appropriate firmware, the PN532 can handle the ISO/IEC 14443B protocol.
Fig 6. ISO/IEC 14443B Reader/Writer communication diagram
Table 7. Communication overview for ISO/IEC 14443B Reader/Writer
Communication scheme ISO/IEC 14443B Type B higher baud rate
Baud rate 106 kbit/s 212 kbit/s 424 kbit/s
Bit length
PN532 to
PICC/Card
Modulation 8 -14% ASK 8 -14% ASK 8 -14% ASK
Bit coding NRZ-L NRZ-L NRZ-L
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 BPSK BPSK BPSK
1. PCD to PICC, 8 - 14% ASK,
NRZ-L Coded,
Transfer speed 106 to 424 kbit/s
2. PICC to PCD, Subcarrier Load modulation,
BPSK,
Transfer speed 106 to 424kbit/s
Reader/Writer
PN532
HOST
Battery
ISO/IEC 14443B
Card / PICC
128
13.56MHz
--------------------------
9.44s
64
13.56MHz
--------------------------
4.72s
32
13.56MHz
--------------------------
2.36s