# Custom NFC Chip ## What is a Custom NFC Chip? A **custom NFC chip** is a specialized Near Field Communication integrated circuit designed and programmed to meet specific application requirements beyond standard off-the-shelf NFC tags or chips. From my personal experience working on embedded systems projects, the decision to use a custom NFC solution often stems from unique security needs, specialized data structures, or integration with proprietary hardware. I've found that the ability to tailor the chip's memory layout, authentication protocols, and command set can be a game-changer for innovative product development. ## Technical Specifications and Parameters of Custom NFC Chips When evaluating a **custom NFC chip**, understanding its technical foundation is crucial. Here are detailed parameters based on common industry benchmarks. *Please note: These technical parameters are for reference data only. For exact specifications, you must contact backend management.* ### Physical and Electrical Characteristics * **Chip Dimensions:** 0.8mm x 0.8mm (WLCSP package) to 6mm x 6mm (SOIC package) * **Communication Frequency:** 13.56 MHz (ISO/IEC 18092 & 14443 compliant) * **Operating Voltage Range:** 1.8V to 5.5V * **Read/Write Distance:** Typically 0 to 10 cm, dependent on antenna design * **Power Harvesting:** Capable of harvesting energy from the RF field to power the chip. ### Memory and Performance * **User Memory Capacity:** Configurable from 144 bytes to 64KB (EEPROM or FRAM) * **Memory Organization:** Fully customizable sectors and blocks with configurable access permissions. * **Data Transfer Rate:** Up to 848 kbit/s (depending on the custom NFC chip configuration). * **Unique Identifier (UID):** 4, 7, or 10 bytes, often with a factory-locked, unchangeable serial number. * **Chip Core:** Often based on an 8-bit or 32-bit secure microcontroller core (e.g., ARM Cortex-M0). ### Security Features * **Cryptographic Engine:** Integrated hardware accelerator for AES-128/256, ECC, or RSA. * **Secure Element:** Optional integrated Secure Element (SE) or Trusted Execution Environment (TEE). * **Authentication:** Support for mutual authentication, secure messaging, and anti-cloning features. * **Tamper Detection:** Physical sensors for light, temperature, and voltage tampering detection. ## My Pe