Hi all, We just integrated a shuttle-board 3.0 into our system to evaluate the BMP581's performance. Our problem is an excessive power-up time of around 300 ms, a value well above the specification in the datasheet (page 10, t_powup max. of 2ms). It is not at all a random behavior. We can reproduce it and it is always the same. Referring to the datasheet's diagram, this is our situation: And here a screenshot of an oscilloscope measurement with some notes explaining how we proceeded and what we observed: The rising edge of the VDD/VDDIO at the power-up instant is (remark: y-cursors not placed correctly): Does anybody have an explanation for this behavior? Thanks a lot in advance. Best regards. Philipp
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