BOD_OFF powerDown()

[Ovis]

Hi Folks at RocketScream,

I’ve been using your excellent low power library for a while now in ATMega328p-based projects. I’m considering using the ATMega1284p in a variant of my next project. Based on your low power source code, if I understand right, powerDown with BOD disabled only works for 328p and 168p? Have I interpreted this right?

From the ATMega1284p datasheet, I think it supports sleep with BOD disabled (?). Do you have any hints for modifying the low power library for BOD disabled sleep with the 1284p?

Thanks,

Michael

• This topic was modified 4 years, 11 months ago by Ovis.

[LIM PHANG MOH]

It can’t be enabled or disable through software in power down on ATMega1284P (look at table 8.1 under section 8.2 Sleep Modes). So, it must be disabled by fuse setting.

[Ovis]

Hi – thanks so much for getting back to me.

I think we are looking at different data sheets. Looking at one I just downloaded from

https://www.microchip.com/en-us/product/ATmega1284P

The relevant table seems to be table 11-1 in section 11.2 (seems to me that the section 8 you refer to is simply section 11 in this pdf).

However, the material difference is that it lists an entry of “yes” in the “Software BOD disable” column in the row for “Power-down”.

Michael

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