Hello fellow friends and engineers.
I am not an expert in electronics. I am facing a problem that affects a lot of my time to troubleshoot but still can't figure out the causes of this problem..
Would appreciate if there is any expert in here..can you share your experience or your views on this?
Why crystal SMT (surface mount) 16MHz doesn't show 16MHz frequency when measured? What are the typical causes? I tried measuring using oscilloscope both pins, but the value is not 16MHz, but in kHz and sometimes smaller...and the value keeps changing.
When I measured the voltage across the oscilloscope, there is no voltage at all. Does this mean the crystal is damaged?
I have tried to change to a new crystal, but still same result.
For your information, they crystal is used to provide 16MHz to the microcontroller 8051 (pins XTAL1 and XTAL2 of the 8051).
I used 22pF as the parallel capacitors across the crystal.
If anyone here can give your views, please let me know. Your helps and assistance is highly appreciated.
Thanks.
Nazree
PS: I will attach the picture of the diagram later...
I am not an expert in electronics. I am facing a problem that affects a lot of my time to troubleshoot but still can't figure out the causes of this problem..
Would appreciate if there is any expert in here..can you share your experience or your views on this?
Why crystal SMT (surface mount) 16MHz doesn't show 16MHz frequency when measured? What are the typical causes? I tried measuring using oscilloscope both pins, but the value is not 16MHz, but in kHz and sometimes smaller...and the value keeps changing.
When I measured the voltage across the oscilloscope, there is no voltage at all. Does this mean the crystal is damaged?
I have tried to change to a new crystal, but still same result.
For your information, they crystal is used to provide 16MHz to the microcontroller 8051 (pins XTAL1 and XTAL2 of the 8051).
I used 22pF as the parallel capacitors across the crystal.
If anyone here can give your views, please let me know. Your helps and assistance is highly appreciated.
Thanks.
Nazree
PS: I will attach the picture of the diagram later...