基于Verilog的8051微控制器中断系统的设计-半导体芯片系统设计与工艺专业论文.docxVIP

Abstract 8051 microcontroller is applied widely in the domestic. Setting up comprehensive Verilog model of 8051 microcontroller can be beneficial to the embedded system and various onchip debug system. In the degign of microcontroller, the design of the control signal is the most complex, and in control signal, the interruption system is the most complex. 8051 microcontroller contains five interrupt sources: external interruption 0, timer/counter 0, external interruption 1, timer/counter 1, interruption of serial mouth. internal Two interrupt prioritys of 8051 microcontroller limit that the interruption control system can only meet two priority nested interruption. As the function of 8051 microcontroller expands, the original interruption system cannot catch up with the actual application. This subject designs the interruption control system of 8051 microcontroller with Verilog HDL. It not only can meet interruption response control of different priority levels, but also can complete with priority level among the response control at the same time, realizing the seamless cohesion of different interruption responses. It also expands the practical applicationof 8051 microcontroller. This subject optimizes the response process of the interruption of the control system to reduce the interrupt delay time, which means a lot to the real-time application and higher precision. The system also provides adjustment function of interrupt priority levels, so users can deal with interruption according to actual condition. This paper discussed the interrupt control circuit, interrupt response, nested interruption, completed the timer control module, external interruption, control module, a serial port control module with Verilog. Upon the completion of circuit analysis and design of sub-module, the whole circuit was functional simulated and verified. Simulation is finished on ModelSim of Mentor. These measurements assured correct design of clock chip. The last design result complet