Hi, I have just put ATMega328P-AU (brand new - no bootloader, no program) on PCB, added 16 MHz crystal, ISP header and successfully programmed "blink" example it using AVRISP mkII (used Uno and Duemillanove 328 board profiles). To my surprise LED blink frequency was very small. Using stopwatch I ca…

[Solved] ATMega328P-AU running at 1 MHz instead of 16 Mhz

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