Microprocessing chip and code downloading method

The invention relates to the technical field of chip testing, in particular to a micro-processing chip and a code downloading method. The micro-processing chip is provided with a first-in first-out (FIFO) module, a state machine, a bus module and a storage module; wherein the FIFO module is used for receiving a test excitation signal based on an external clock and performing time domain conversion on the test excitation signal; the state machine is used for encoding the test excitation signal after time domain conversion into a bus signal; and the bus module is used for transmitting the bus signal to the storage module so as to realize downloading storage and/or programming of code data. According to the micro-processing chip and the code downloading method provided by the invention, the downloading speed of the code data can be improved, and the testing efficiency of the chip can be improved. 本申请涉及芯片测试技术领域，具体地涉及一种微处理芯片及代码下载方法。所述微处理芯片，设置有先进先出FIFO模块、状态机、总线模块和存储模块；其中，所述FIFO模块，用于接收基于外部时钟的测试激励信号，并对所述测试激励信号进行时域转换；