# Mifare 1K NFC: The Classic Contactless Smart Card Technology ## Introduction to Mifare 1K NFC **Mifare 1K NFC** is one of the most widely deployed contactless smart card technologies globally. From my personal experience working in access control and public transportation sectors, I've seen firsthand how **Mifare 1K NFC** cards have become the backbone of numerous security and payment systems. The reliability and standardized implementation make it a go-to solution for organizations needing robust RFID technology. ## Technical Specifications of Mifare 1K NFC When implementing **Mifare 1K NFC** solutions, understanding the technical parameters is crucial for system compatibility and performance optimization. ### Memory Structure and Organization - **Total Memory**: 1 KB EEPROM - **Memory Organization**: 16 sectors with 4 blocks each - **Block Size**: 16 bytes (128 bits) per block - **Sector Structure**: Each sector contains 3 data blocks and 1 sector trailer - **Unique Identifier (UID)**: 4-byte or 7-byte serial number ### Communication and Performance Parameters - **Operating Frequency**: 13.56 MHz - **Data Transfer Rate**: 106 kbit/s - **Communication Protocol**: ISO/IEC 14443 Type A - **Operating Distance**: Typically 0-10 cm (depends on reader power and antenna design) - **Anti-collision**: Supports multiple cards in field simultaneously ### Security Features - **Authentication**: Mutual three-pass authentication - **Crypto Algorithm**: Proprietary CRYPTO1 stream cipher - **Access Conditions**: Configurable via sector trailers - **Key Storage**: Two 48-bit keys (Key A and Key B) per sector ### Physical Specifications - **Chip Dimensions**: 2.5 mm × 2.5 mm (typical die size) - **Chip Code**: NXP MF1 IC S50 - **Operating Voltage**: 3.3V ± 10% - **Current Consumption**: < 20 mA during operation - **Temperature Range**: -25°C to +70°C *Note: These technical parameters are reference data. For exact specifications for your specific application, please contact our backend management team.* ## My Experience with Mifare 1K NFC Implementation During my tenure as a systems integrator, I discovered a particular talent for troubleshooting **Mifare 1K NFC