The expanded IO port is used to drive the matrix keyboard. GPG1, 3, 5, 7 are connected to the column lines as interrupts, EXTINT9, 11, 13, 15; GPE11, 13 GPB8, 6 are connected to the row lines. The rel
PIC16F1825 runs well with 16M, 12M, 8M, and 4M, but the program does not run when it is changed to 20M crystal. What's the matter? Please help me. The manual says that the maximum HS type is 20M
[i=s]This post was last edited by Madai on 2016-7-27 17:14[/i] A colleague said For inductors of the same size and inductance, the shielding effect of the former in the picture is better, but when I a
[align=left][size=4][color=rgb(62, 62, 62)]BGA is a commonly used component on PCB. Usually, CPU, NORTH BRIDGE, SOUTH BRIDGE, AGP CHIP, CARD BUS CHIP, etc. are mostly packaged in BGA format. In short,