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hmm! I don’t have the free bandwidth (or the RF engineering chops) to do this, but while playing around today, noticed that the SAMR21E19A has *exactly* a QT Py’s worth of GPIO. (and if I’m reading this datasheet correctly, 768 kb of integrated SPI Flash?) https://ww1.microchip.com/downloads/en/DeviceDoc/SAM-R21_Datasheet.pdf

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