MFRC522

MFRC522 Standard performance MIFARE and NTAG frontend Rev. 3.9 — 27 April 2016 112139 Product data sheet COMPANY PUBLIC 1. Introduction This document describes the functionality and electrical specifications of the contactless reader/writer MFRC522. Remark: The MFRC522 supports all variants of the MIFARE Mini, MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus RF identification protocols. To aid readability throughout this data sheet, the MIFARE Mini, MIFARE 1K, MIFARE 4K, MIFARE Ultralight, MIFARE DESFire EV1 and MIFARE Plus products and protocols have the generic name MIFARE. 1.1 Differences between version 1.0 and 2.0 The MFRC522 is available in two versions: MFRC52201HN1, hereafter referred to version 1.0 and MFRC52202HN1, hereafter referred to version 2.0. The MFRC522 version 2.0 is fully compatible to version 1.0 and offers in addition the following features and improvements: Increased stability of the reader IC in rough conditions An additional timer prescaler, see Section 8.5. A corrected CRC handling when RX Multiple is set to 1 This data sheet version covers both versions of the MFRC522 and describes the differences between the versions if applicable. 2. General description The MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56 MHz. The MFRC522 reader supports ISO/IEC 14443 A/MIFARE and NTAG. The MFRC522’s internal transmitter is able to drive a reader/writer antenna designed to communicate w...