Research on embedded storage system with reusable control structure based on NANDFlash

NANDFlash has gradually become an industry standard for embedded storage system, because of its versatile features such as reliability, non-volatility, low-cost, high density, and great capacity. At PCB level and production line level, BST (Boundary-Scan Technique) complying with IEEE-1149. 1 is often used to do the flash testing and programming. This paper presents a storage system with reusable control structure, which is composed of a storage card and a card writer. Based on explaining the hardware structures of the storage card and card writer, the software infrastructure of the storage system and the implementation of the typical NANDFlash operations are shown. After successfully doing experiments on reading, writing, erasing NANDFlash with different storage capacity, the control structure of the storage system is reused in an embedded vehicle navigation device. Compared with BST, the system has advantages of simple structure, short operation time, and cost-efficient.