I'm using i2c and SPI peripherals and switching off the UART, TIMER1 and TIMER2 along with ADC and BOD in the IDLE mode! I cannot achieve powerDown mode because Im not able to wake up from it! and maybe thats because I don't have a Oscillator aboard as I'm running ATmega328p on 8Mhz internal oscilla…

[Solved!]SLEEPING ATmega328 in my case scenario!

mrburnette April 2, 2014, 11:08pm 3

Use the Watchdog timer to wake up.

There are plenty of forum examples. Food tiny85, I have one here:
http://www.hackster.io/rayburne/hot-yet

Ray

Topic		Replies	Views
Problem with power-down on Atmega 328p General Guidance	11	1668	May 5, 2021
atmega328 sleep and watchdog 3rd Party Boards	4	1161	May 6, 2021
Sleep mode - what can be done with Arduino? Troubleshooting	12	21163	May 6, 2021
Sleep Code disables delay and millis functions Programming	2	882	May 5, 2021
Can't seem to wake up from Power Down using Pin 2 interupt (Solved) Programming	5	2430	May 5, 2021