Abstract
At present the monolithic integrated circuit(Microcontroller Unit,MCU)applications have penetrated into all fields,Therefore the monolithic integrated circuit technology development also changes with each new day. Practical application-as a strong academic, monolithic integrated circuit research and teaching can not leave the experiment. The traditional monolithic integrated circuit experiment system, needs frequently to pull out inserts the fever to write the monolithic integrated circuit chip to program,relies on to the simulation machine debugging, The experimental cost high also the efficiency is low, already unsuitable modern science and technology development demand. How to make rational use of monolithic integrated circuit performance, user-friendly and efficient product development has become the current study hot spot. This article from the microprocessor, Embedded Systems and the C language and so on three aspects begins, to draw up take the AT89S52 monolithic integrated circuit as a core, designs the function stronger new monolithic integrated circuit experiment system.
Firstly, studied the microprocessor and the development tools, Embedded Systems type characteristic, inserts basic theory and so on type operating system.
Secondly, deep researched in AT89S52 monolithic integrated circuit performance characteristic, raised utilization of the information, laid a foundation for the development of experimental hardware,and aimed at the new experiment system software development request, conducted the application research to the C language.
Finally, took AT89S52 as the core, Designed contains the integration voltage-stabilizer circuit, the clock electric circuit, repositions the electric circuit, the liquid crystal display and the control circuit, ISP in-system programmable devices, the RS232 serial communication electric circuit in the system, the switching circuit, LED display circuit chip and the ISD2590 pronunciation chip recording/broadcast electric circuit and so on nine kind of periphery electric circuits, and compiles for the integrity schematic diagram. After uses electronic CAD (PROTEL99SE software), picture processing software (PhotoCap3), and the computer picture chart board design plan electric circuit schematic diagram Assembly the experimental board.
Using C language adjustment software dev C++IDE, compiler Keil C (uVision-51) and debugger WinIDEA 9.0, technical innovation and so on ISP software, has realized the ISP on-line simulation debugging function, Inserts the embedded technology to melt into to in the monolithic integrated circuit experiment system development and the application, for the monolithic integrated circuit study and should the amount used body custom make, suit to the monolithic integrated circuit system development, the teaching and so on needs frequently to renovate the procedure the situation, enormously enhanced the procedure development efficiency, will achieve the optimized monolithic integrated circuit experiment system function the goal.
Key words:Microprocessor;Embedded Systems;AT89S52 MCU;Experimental system; Debugging and simulation