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 73 of 137
NXP Semiconductors
PN512
Full NFC Forum-compliant frontend
Remark: The LSB for data and address bytes must be sent first. No parity bit is used
during transmission.
Read data: To read data using the UART interface, the flow shown in Table 149
must be
used. The first byte sent defines both the mode and the address.
Write data: To write data to the PN512 using the UART interface, the structure shown in
Table 150
must be used.
The first byte sent defines both the mode and the address.
Table 149. Read data byte order
Pin Byte 0 Byte 1
RX (pin 24) address -
TX (pin 31) - data 0
(1) Reserved.
Fig 15. UART read data timing diagram
001aak588
SA
ADDRESS
RX
TX
MX
DTRQ
A0 A1 A2 A3 A4 A5 (1) SO
SA D0 D1 D2 D3 D4 D5 D6 D7 SO
DATA
R/W
Table 150. Write data byte order
Pin Byte 0 Byte 1
RX (pin 24) address 0 data 0
TX (pin 31) - address 0