# Mifare DESFire EV2 Card: Advanced Security for Modern Applications ## What is the Mifare DESFire EV2 Card? The **Mifare DESFire EV2 card** represents the pinnacle of contactless smart card technology from NXP Semiconductors. Building upon the legacy of its predecessors, this IC card platform is designed for high-security, multi-application use cases requiring fast transaction times and robust encryption. Personally, I've found its flexibility in development to be exceptional, allowing for the creation of complex, layered access systems that were previously cumbersome to implement. My experience integrating the **Mifare DESFire EV2 card** into a university campus system revealed its true potential. We managed to consolidate student ID, library access, payment for meals, and dormitory entry onto a single card, with impeccable performance. This project leveraged my skill in system architecture to partition the card's memory effectively for each department's independent application. ## Technical Specifications and Detailed Parameters For developers and system integrators, understanding the technical foundation is crucial. Below are the key technical indicators and detailed parameters for the **Mifare DESFire EV2 card**. **Chip and Core Specifications:** * **Chip Code/Model:** NXP MF3DHx2 / MF3DHx3 series (e.g., MF3DH2201, MF3DH2301). * **Microcontroller:** Based on a secure 32-bit ARM® SC300 core. * **Memory Types & Sizes:** * **EEPROM:** Available in 2KB, 4KB, and 8KB versions. * **User Memory:** Configurable within the EEPROM, dependent on the application and security structures created. * **Communication & Interface:** * **RF Interface:** ISO/IEC 14443 Type A, 106 kbps. * **Communication Protocol:** ISO/IEC 7816-4 compliant APDU-based communication. * **Dimensions (Standard Card):** 85.60 mm × 53.98 mm × 0.84 mm (ISO/IEC 7810 ID-1 format). Also available in key fob, sticker, and other form factors. * **Security Features:** * **Cryptographic Co