MCU EFM8SB10F8G just provide 100ms high pulse after power button on

Hello, we are encountering the same issue as this link.

Our carrier board is using the exact design as P2822 and using the FW V0.11 for EFM8SB10F2G.
But don’t know why the VIN_PWR_ON output from the EFM8SB10F2G somehow drops to LOW after around 100ms.

Is there any possibility that could cause this issue?
Some power up timing diagrams are attached for more information.



Hi, maybe you should check all input and output of MCU and compare that to P2822 to find out clue since you indicated your design is same to P2822. Basically if the design, inputs and firmware are same, the output should be same too.

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