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 56 of 95
NXP Semiconductors
MFRC522
Standard performance MIFARE and NTAG frontend
Table 84. SerialSpeedReg register bit descriptions
Bit Symbol Description
7 to 5 BR_T0[2:0] factor BR_T0 adjusts the transfer speed: for description, see
Section 8.1.3.2 on page 12
4 to 0 BR_T1[4:0] factor BR_T1 adjusts the transfer speed: for description, see
Section 8.1.3.2 on page 12