1. Open the project file of "51 Microcontroller Minimum System".
2. Create a PCB library file: Click the "File" menu, select the "Library" option in the "New" option, and then select "PCB Component Library" to enter the component PCB package editing interface.
3. Save the PCB library file: Select the "File" menu, select the "Save" option, name the file "CH340X Package Library" and save it.
4. The operation interface of PCB library components is similar to the PCB editing interface, including the enlargement and reduction of the view, the movement and flipping of components, etc. It should be noted that under the operation interface of the library components, the edited It is a single component, not the entire PCB diagram, and the component must be placed near the coordinate origin for editing. *Operation to find the origin: Edit->Jump->Reference Point*
5. Modify the properties of the editing interface: click the mouse cursor on the right side of the "Properties[ˈprɒpətiz](properties)" editing window, commonly used The settings are: "Grid Manager[ˈmænɪdʒə(r)Manager] ->Step value->"X" and "Y" in the "Step /span>
The "Other->Unit[ˈjuːnɪt]" option can modify the unit used (the "mils" option uses milliinches as the unit, The "mm" option is millimeters as the unit);
6. Take CH340X as an example: enlarge the window to a suitable position (the grid is visible), select the "Pad" option under the "Place" menu to place a pad, and then the mouse cursor becomes a movable pad. , use the "Ctrl+End" key combination to automatically move the pad to the coordinate origin, and click the left button to confirm the placement.
7. Modify the pad properties: Double-click the pad, the "Properties (Properties)" modification interface pops up in the right window, "Properties-> Designator[ˈdɛzɪgneɪtə] Indicator" option can change the pad number; "Layer[ˈleɪə(r)] Layer" option can change the layer of the pad (if it is a through-plug component, select "Multiple['mʌlti]Multi-Layer", if it is a patch component, select the top layer "Top Layer" or the bottom layer "Bottom Layer");
The "X-Size" and "Y-Size" options modify the abscissa width and ordinate height of the pad respectively; what we want to draw is CH340X. After finding the package specifications of the chip online, I drew another sw diagram myself. It is 0.1mm larger than the actual pin, as follows:
Draw the size of the pad according to the picture above, 0.33*1.11.
The "Hole Size" item can modify the diameter of the inner hole of the pad; the "Round" option can make the shape of the inner hole a round hole; the "Rect" option can make the shape of the inner hole a square hole. When this is selected When selecting the item, the "Rotation" option can input the rotation angle of the inner hole; the "Slot[slɒt]position" option The shape of the inner hole can be made into an elliptical hole. When this option is selected, the "Rotation" option can input the rotation angle of the inner hole, and the "Length" option can input the length of the ellipse (note: the value of this item must be greater than the inner hole Diameter "Hole Size" value); "Size and Shape-> Shape[ʃeɪp]Shape" option Modify the shape of the pad ("Round" is round, "Rectangular[rekˈtæŋɡjələ(r)]" is square, "Octagonal< a i=9>[ɒkˈtæɡənl]” is an octagon, “Rounded Rectangle” is a rounded square), X/Y is used to modify the size of the pad. Other parameters do not need to be modified.
According to the above content, set the parameters of the placed pad as follows: the pad number is 1, and the pad is 0.33mm×1.1mm round.
8. Follow the above method and continue to place the remaining 9 pads. The parameter settings are as follows: the shape is circular, 0.33*1.1, and the pad numbers are 2, 3, 4, 5, 6, 7, 8, 9, and 10. When placing the second pad, you need to set it as follows:
* Directly set Step X to 0.1mm, and observe the XY on the lower left ValueDirectly place the pad and draw the border*
10. Draw the package outline: In the "Layer" tab at the bottom of the editing window, select the "Top Overlay[ ˈəʊvəleɪ]" layer , select the "Line" option under the "Place" menu to place a straight line, and draw the component's outline based on the provided component outline dimensions.
11. Package name modification: Find the "PCB Library" option in the lower left tab and click to select. At this time, the default name of the component appears in the upper left window. Double-click the component name to enter the component name modification window. Change " Change the Name" option to "CH340X" and click "OK" to confirm.
12. Add new components: Under the "Tools" menu, select the "New Empty Component" option to add new components. Follow the above method to make the package of the component you want.
