In this case some electromagnetic radiation - like the light from a xenon camera flash - enter the die, causing a photoelectric effect. Unfortunately, as is the risk with any wafer-level packaging like this, it exposes the bare die to the outside world.
In brief, the Raspberry Pi 2 single-board computer (SBC) employs a wafer-level package ( WL-CSP) that performs switching mode supply functionality. Join me below for a brief recap of those previous issues, and an in-depth summary of USB-C, the differences between regular and electronically marked (e-marked) cables, and why detection logic might be making your brand-new Raspberry Pi 4 look like an analogue set of headphones to the power delivery hardware.Ī Trip Down Memory Lane The Raspberry Pi 2, with the camera shy U16 IC in the lower left.īack in February of 2015, a blog post on the official Raspberry Pi blog covered what they figured might be ‘ the most adorable bug ever‘. It would be fair to say that the Raspberry Pi team hasn’t been without its share of hardware issues, with the Raspberry Pi 2 being camera shy, the Raspberry Pi PoE HAT suffering from a rather embarrassing USB power issue, and now the all-new Raspberry Pi 4 is the first to have USB-C power delivery, but it doesn’t do USB-C very well unless you go for a ‘dumb’ cable.
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