Data Sheet

MFRC522 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. 3.9 — 27 April 2016
112139 14 of 95
NXP Semiconductors
MFRC522
Standard performance MIFARE and NTAG frontend
Table 13. Write data byte order
Pin Byte 0 Byte 1
RX (pin 24) address 0 data 0
TX (pin 31) - address 0