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Hi,
We use CY2305SXI-1H on a design where we are receiving back for several customer defect reports during start-up at low temperature (lower than 10°C). After deep investigation on the design, we have probably found a defect root cause which is clock output interruption even after the stabilization of 1 ms after a clock shift on the fly.
As you will see in the scope snapshot hereunder :
-Yellow signal is the end of the 1 ms delay (go low when timer is elapsed) ;
- Cyan signal is the clock input (switching from 8,33 MHz to 100 MHz) at the beginning of the 1ms delay ;
- Magenta is one clock output. As we can seen we observe multiple clock interruptions even after 1ms of stabilization during power ON at low ambient temperature (lower than 10°C). Important to notice that this anomaly is not observable on all devices (probably less than 5 % but not fully characterized as per today).
Did you receive such equivalent user's feedback ?
Could you help us to investigate on which factor it could be linked ? Could it be linked to manufacturing issues linked to some component ?
Thanks in advance for your technical support.
Best regards,
Stephan COLLE
Solved! Go to Solution.
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Clock Buffers
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The case #00672688 is submitted.
Thanks,
Stephan