1. market: JTAG technology widely used in the market can be used for programming and online simulation, which is easy to popularize products in the market and shows obvious advantages in system design, development and debugging and practical application. At the same time, MCU has the advantages of low power consumption and cost.

2. Performance: The Bluetooth module of DAC has high processing speed, and the main frequency is as high as 72MHZ. Compared with the traditional 5 1 single chip microcomputer, it has as many as 37 IO ports and integrates multiple timer, USART, SPI and IIC communication interfaces and protocols, so the Bluetooth module of this audio DAC fully meets the requirements of this product and is very convenient to use.