Ask God for help, SCM can directly drive LED dot matrix? If not, what about the drive circuit? Can you give me a map?
SCM should be able to drive LED, write a program you can display the content you want!!!
If you are using STC 5V51 Series MCU, the maximum input current is 120 mA, is basically up about half. A mouth, a mouth, the output must be strong pull, the input current, but if so, the microcontroller will be in a relatively limited state, and brightness will receive some impact. If you don't light up a lot, it's not necessarily bad.
You say the dot matrix should be 8*8, and need to drive the ranks, lit a single light-emitting tube, probably less than 5 mA, all lit should be 300 Ma, of course, this situation is not much.
In theory, no problem, but now a large number of single-chip power consumption is very low, that is to say, drive current is very small, it is not too easy to drive.
