Introduction to 51 MCU - Use of Proteus 8 Professional

1. What is Proteus 8 Professional?

Proteus is an EDA tool software launched by Lab Center Electronics.

Proteus has the features of schematic layout, PCB automatic or manual wiring, SPICE circuit simulation, interactive circuit simulation, simulation of processors and their peripheral circuits, etc.

Proteus 8.9 installation package, with installation tutorial

Link: https://pan.baidu.com/s/19YPyUeNt5bTVd7ch_15tig 

Extraction code: qcyx 

2. Use of Proteus 8 Professional

Double-click the icon to enter the main page: as shown:

First we need to create a project file. Click the icon in the upper left corner or click New Project in the Start Design, as shown in the figure:

Select a suitable save path and name (note whether the extension is .pdsprj) and click "Next" to start creating the schematic, as shown in the figure:

Generally, no modification is required, the default is fine, and then it is time to build the PCB, as shown in the figure:

The default settings are generally fine, and then it’s time to build the firmware, as shown in the figure:

Just follow the next step without any brains. . .

Then it’s time to summarize. You can see all the previous operations on this interface, as shown in the figure:

Click "Finish" to the schematic design interface, as shown in the figure:

Or you can directly click "Schematic Design" to reach this interface, but the subsequent saving is quite troublesome.

Then we can start our schematic design, the function selection is as shown in the figure:

Click "P" in the component selection area to find the components you need, as shown in the figure:

For example, to search for a resistor, enter RES in the search box and double-click the required component to add it to the component selection area, as shown in the figure:

We use the above components to build a minimum system, as shown in the figure:

In Proteus 8 Professional, the pins for connecting the chip to the power supply are already connected by default, so the pins will not be displayed, and the microcontroller is already connected to the crystal oscillator by default, so there is no need to connect the crystal oscillator to pins 19 and 20 as shown in the figure.

Start simulation:

In the figure, red represents a high level "1", blue represents a low level "0", and if gray appears, it means an unknown state, and an external pull-up resistor is required to pull the level up. For example, the P0 port in the figure outputs a high level because an external pull-up resistor is connected.