11-01-2019, 09:15 AM
(10-24-2019, 10:46 PM)rahulsharma Wrote: I am trying to reproduce the same issue here in my workspace and it has been around 20 days but not able to reproduce same.
Will also try your point of Electromagnetic interferene here.
This may be an evidence of electromagnetic interference problem.
Quote:Some more people are saying that they got same issue with eMMC. So may be i should continue with good quality SD Card for my future projects.
eMMC may be more susceptible for EMI because FLASH chip for PCB installation has fewer EMI filtering circuits, if any, just because should work in controlled environment and is not designed to operate through a connector.
In contrast, eMMS has EMI filtering for sure, because is designed to work in mobile devices through a connector, in the vicinity of transmitting antennas.
You have not provided enough details about your hardware and environment. But in general I can suggest you to try:
- Fit ferrite beads on all wires connected to the board.
- If former doesn't help enough, try to protect the board by a screen, may be by insulated copper foil around eMMC board. Connect the foil to the closest ground plane (should conduct to 0V wire of power supply zero Ohms).
Good luck!
If you will need more assistance, you may send me a link to your device hardware photos to let me provide more suggestions in private.
