MAX6951是紧凑的共阴极显示驱动器，可通过SPI、QSPI、MICROWIRE兼容的串行接口将微处理器连接到独立的7段LED数码管、条形图或分立LED。本程序利用TI公司DSP LF2407A 实现MAX6951驱动6位7段数码管。硬件连接采用IOPC0做片选信号，片上SPI外设与MAX6951通信。绝对原创，首次共享！-MAX6951 is a compact, common-cathode display driver is available through SPI, QSPI, MI

使用STM32F446实现的QSPI接口，增加了4线 SPI NAND的驱动程序，实测可以多种SPI NAND 实现基础操作，可以用来调试QSPI接口，或者SPI NAND；有兴趣的朋友可以看看(Using the QSPI interface implemented by STM32F446, the driver program of the 4-wire SPI NAND is added, which can be used to debug the QSPI interface, or