CN201210294Y

CN201210294Y - Simple micro-controller simulating apparatus

Info

Publication number: CN201210294Y
Application number: CNU2008201014444U
Authority: CN
Inventors: 苏伟达; 吴允平; 李汪彪; 吴进营; 蔡声镇; 卢宇
Original assignee: Fujian Normal University
Current assignee: Fujian Normal University
Priority date: 2008-02-20
Filing date: 2008-02-20
Publication date: 2009-03-18
Anticipated expiration: 2018-02-20

Abstract

The utility model relates to the field of a single chip machine emulation, more particularly a simple single chip machine emulation device that is composed of an IAP single chip machine, a state indication circuit, a function selection circuit and an RS-232 circuit. The state indication circuit, the function selection circuit and the RS-232 circuit are respectively connected with the IAP single chip machine, the RS-232 circuit is also connected with a serial port of a PC. The device has the advantages of simple circuit, low cost, directviewing state and flexible way of power supply, which can meet the learning requirements of single chip machine amateurs during an introduction stage.

Description

A kind of simple and easy one-chip machine simulation device

Technical field

The utility model relates to a kind of one-chip machine simulation field, is a kind of simple and easy one-chip machine simulation device specifically.

Background technology

Electronic technology enters digital Age now, and visible everywhere single-chip microcomputer is present in each corner of our life.Every two years having in " national Electronic Design Competition " exercise question of one needs single-chip microcomputer to control and manage more than 60%, therefore grasp the pacing items that singlechip technology becomes the employment of electronic information class Major all the more.The vocational schools, institution of higher learning etc. that found at present electric class relevant speciality all do not stint and drop into substantial contribution buying experimental box and emulator to set up the single chip computer experiment chamber, cultivate the basic using method that the student grasps single-chip microcomputer.But will further improve its practice and manipulative ability, it is far from being enough only learning with the time of laboratory, and the student more in depth learns singlechip technology out-of-class study because of the expensive one-chip machine simulation equipment of no economic capability purchase can't utilize.Patent (application number: 91226228.1) on the single-chip microcomputer learning machine, adopt short circuit pin and the sub-technology of short circuit,, increase experiential function in the hope of realizing the conversion of experiment content; Utility model patent (ZL98227888.8) has been invented a kind of device of realizing emulation on the single-chip microcomputer learning machine; Utility model patent (ZL01246998.X) has been invented a kind of computer architecture teaching experimental development device, can carry out graphic operation and debugging by computing machine; Patent (application number: 200410022736.5) disclose a kind of simulation type singlechip experiment apparatus, can finish 20 experimental projects.All in all, these contrive equipments all carry out around experiential function expansion, convenient experimental operation etc.; But the single-chip microcomputer model of its emulation is single, design of hardware and software space relative fixed and mostly be replication experiment, is unprofitable to promote and improve student's practice and manipulative ability.Therefore a kind of wiring and function one-chip machine simulation device simple, cheap and easy to use are undoubtedly vast single-chip microcomputer fan's the good assistant of study,

Summary of the invention

The utility model provides a kind of simple and easy one-chip machine simulation device, can overcome the deficiency of existing emulator.

For realizing that the technical scheme that target of the present utility model adopts is: a kind of simple and easy one-chip machine simulation device is made up of IAP type single-chip microcomputer, condition indication circuit, function selector circuit, RS-232 circuit and PC.Condition indication circuit, function selector circuit, RS-232 circuit link to each other with IAP type single-chip microcomputer respectively, and the RS-232 circuit links to each other with the serial ports of PC, the data transmission when finishing emulation.。

Simple and easy one-chip machine simulation device described in the utility model has utilized IAP (In ApplicationProgrammable, the online programming) function of single-chip microcomputer, and can directly support the IDE exploitation simulated environment of KEIL C51.

Described IAP type single-chip microcomputer has two independent flash memories (FLASH) program.Can rewrite program in the other program storage area therein in program storage area during operation when program, in debug process, can make amendment to program at any time, reach the simulated effect of single step run, breakpoint operation.IAP type single-chip microcomputer adopts P89V51RD, has the data RAM of 64kB Flash and 1024 bytes in the sheet, supports the emulation of the 51 kernel single-chip microcomputers that companies such as ATMAL, Philips, Winbond, SST, Temic produce.

Described condition indication circuit is made of 10 LED light, intuitively shows the communications status of IAP type microcontroller serial port and the level state of P0.

Described function selector circuit is made of a toggle switch and a wire jumper.The serial ports that toggle switch takies in the time of can discharging IAP type single-chip microcomputer full speed running state; Wire jumper is used to select power supply mode, improves the dirigibility of power supply.The one-chip machine simulation device is directly supported the IDE exploitation simulated environment of KEIL C51,

The beneficial effects of the utility model are: the one-chip machine simulation device that has adopted IAP type single-chip microcomputer to form, have the IDE exploitation simulated environment that circuit is simple, cheap, state is directly perceived, power supply mode flexibly, is directly supported KEILC51, the emulation of support 51 kernel single-chip microcomputers, can satisfy the single-chip microcomputer fan study needs in the ABC of stage.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a system chart of the present utility model.

Fig. 2 is the RS-232 circuit theory diagrams of an embodiment of the utility model.

Fig. 3 is the Fundamentals of Mono-Chip Computers figure of an embodiment of the utility model.

Embodiment

Among Fig. 1, condition indication circuit, function selector circuit, RS-232 circuit link to each other with IAP type single-chip microcomputer respectively, and the RS-232 circuit links to each other with the serial ports of PC.

Among Fig. 2, J1 is a USB interface, and for simulator provides power supply, 1 pin of J1 is connected with wire jumper J2, and J2 is used to select power supply mode, USB interface power supply, Target Board power supply; 2,3 of J1 connects and is connected with 7,8 pin of RS-232 integrated circuit U1 respectively, and the RS-232 integrated circuit is selected the MAX232 integrated chip for use; The 4 pin ground connection of J1.S1 is a toggle switch, is used to be provided with the connected mode of the RS-232 mouth of IAP single-chip microcomputer.Light emitting diode D1 is the power supply status indication, and the anode of D1 is connected with resistance R 1.Light emitting diode D2 is the accepting state indication, and the anode of D2 is connected with resistance R 2.Light emitting diode D3 is the transmit status indication, and the anode of D3 is connected with resistance R 3.

Among Fig. 3, J3 is a pull-up resistor, and 1 pin of J3 is connected with power supply VCC; 2～9 pin of J3 are connected with the anode of light emitting diode D4～D9 respectively, and the negative electrode of D4～D9 is connected with the P0 mouth of IAP single-chip microcomputer U2 respectively and indicates as level state.1～9,12～40 pin of U2 are connected with 1～9,12～40 pin of contact pin U3 respectively, U3 as the prolongation of U2 pin so that as emulation; 19 pin of U2 are connected with crystal oscillator Y1, capacitor C 5; 18 pin of U2 are connected with the other end of Y1, capacitor C 6; 9 pin of U2 are connected with capacitor C 7, resistance R 4, reset button S2; The IAP single-chip microcomputer is selected the P89V51RD integrated chip for use.

Claims

1, a kind of simple and easy one-chip machine simulation device, it is characterized in that device is made up of IAP type single-chip microcomputer, condition indication circuit, function selector circuit, RS-232 circuit and PC, wherein condition indication circuit, function selector circuit, RS-232 circuit link to each other with IAP type single-chip microcomputer respectively, and the RS-232 circuit also links to each other with the serial ports of PC.

2, a kind of simple and easy one-chip machine simulation device according to claim 1 is characterized in that described condition indication circuit is made of 10 LED light.

3, a kind of simple and easy one-chip machine simulation device according to claim 1 is characterized in that described function selector circuit is made of a toggle switch and a wire jumper.

4, a kind of simple and easy one-chip machine simulation device according to claim 1 is characterized in that the serial ports that takies when toggle switch can discharge IAP type single-chip microcomputer full speed running state in the described function selector circuit.

5, a kind of simple and easy one-chip machine simulation device according to claim 4 is characterized in that wire jumper is used to select power supply mode in the described function selector circuit.