用max517和单片机实现DA转换通用程序，已经应用到实际产品当中。这个芯片关键在于iic熟悉程度，懂iic协议稍微看看datesheet能够轻松使用。-Using max517 and MCU DA conversion of general procedures, has been applied to the actual product. This chip is the key to IIC familiar with the extent, understand the IIC ag