I'm restoring a circuit board, and I don't know what 20-pin H-bridge motor driver chips are available. I hope you can tell me the model number. I can find it, thank you in advance.
[font=微软雅黑][size=4]This is also the first time I use NXP chips, and I have just started to configure GPIO. I can feel that compared with ST, NXP's GPIO design is more complicated, but the configuratio
Now there are three 485 devices. The slave device has matching resistors that pull up and down 4.7K terminal resistors 120R. The distance is no more than 1 meter. The master device pulls up and down t