Figure 1 - Display board diagram of the one-chip security intelligent door lock scheme based on Nations products

    In recent years, with the substantial improvement of people‘s living standards, the smart door lock, as the core product of home smart security, has been favored and pursued by many consumers, and has become a new outlet in the smart home industry. The traditional intelligent door lock scheme needs to add additional security modules to realize the storage protection, encryption and decryption operation, security authentication and other functions of sensitive information such as key, unlock password, fingerprint template, etc., which is not conducive to the miniaturization design of the product, but also has potential security risks to a certain extent. The one-chip security intelligent door lock scheme launched by the General Assembly of the United States of America based on the National N32G4FRx/N32WB4x MCU can integrate the physically independent smart door lock master control, security chip, fingerprint recognition, touch control, Bluetooth and other functions into a single MCU chip, which saves the cost of the device, while reserving more space for the design of door lock products.