Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI Ficha De Dados

322

ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]

Atmel-8271H-AVR- ATmega-Datasheet_08/2014

The following charts show typical behavior. These figures are not tested during manufacturing. All current 
consumption measurements are performed with all I/O pins configured as inputs and with internal pull-ups 
enabled. A square wave generator with rail-to-rail output is used as clock source.

All Active- and Idle current consumption measurements are done with all bits in the PRR register set and thus, 
the corresponding I/O modules are turned off. Also the Analog Comparator is disabled during these 
measurements. The 

 and 

 shows the 

additional current consumption compared to I

CC

 Active and I

CC

 Idle for every I/O module controlled by the Power 

Reduction Register. See 

 for details.

The power consumption in Power-down mode is independent of clock selection.

The current consumption is a function of several factors such as: operating voltage, operating frequency, 
loading of I/O pins, switching rate of I/O pins, code executed and ambient temperature. The dominating factors 
are operating voltage and frequency.

The current drawn from capacitive loaded pins may be estimated (for one pin) as C

L

*

V

CC

*f where C

L

 = load 

capacitance, V

CC

 = operating voltage and f = average switching frequency of I/O pin.

The parts are characterized at frequencies higher than test limits. Parts are not guaranteed to function properly 
at frequencies higher than the ordering code indicates.

The difference between current consumption in Power-down mode with Watchdog Timer enabled and Power-
down mode with Watchdog Timer disabled represents the differential current drawn by the Watchdog Timer.