Hi group,
As per atemga328p datasheet. If we running on 8Mhz, we can safely operate till 2.4 volts (i guess).
Can we go even down to 2 Volt ? Anyone experimented ?
Cheers,
Omer
I recall someone mentioning going down to 1.8v without issues (and even 1.6v i think before it stops working) but you'd have to search the forum to find that thread. In that range you're overclocking the 328p mcu. Use what others say and do your research or a study in your own project and see how reliable it is to ensure you get the performance you expect.
Quote from: omerattiqahmed on May 09, 2018, 09:05:48 AM
Hi group,
As per atemga328p datasheet. If we running on 8Mhz, we can safely operate till 2.4 volts (i guess).
Can we go even down to 2 Volt ? Anyone experimented ?
Cheers,
Omer
I think the 8MHz internal oscillator safely operates to <= 1.8V, but you may be pushing it on other parts of the device. However, if you wake up and switch the prescaler to 1MHz, for example, to monitor battery voltage, then you can keep the low clock rate if in risky zone, or resume back to 8MHz if that's where you need to operate for full function.
Tom