Hi 8051 experts there
I have made a circuit for remote switching of or on a motor using
89C2051 and the program has checked out in the emulator. Also I have put the whole thing on a breadboard a hundred times and it has worked every time as expected without any flaw.But when I made PCB, soldered all the parts and power it on it does not work - the crystal fails to oscillate. I have in fact taken the same components that form the crystal circuit after successful test to the PCB it still fails.
I have checked the PCB for any errors and also discontinuity for any breaks - I could find none.
And the crystal is just a slow one, 32.768 kHz clock crystal, that works without a hitch on the breadboard.
This is just baffling me. Can any of you suggest what else I should look for?
Thanks for your time and attention
ClueLess