ATMega chip full datasheet - UCSD Department of Physics

ATmega48A/PA/88A/PA/168A/PA/328/P29.2.8 ATmega328P DC CharacteristicsTable 29-9.ATmega328P Dc characteristics - T A = -40°C to 85°C, V CC = 1.8V to 5.5V (unless otherwise noted)Symbol Parameter Condition Min. Typ. (2) Max. UnitsI CCIdle 8MHz, V CC = 5V 1.2 2.7 mAPower Supply Current (1) Active 8MHz, V CC = 5V 5.2 9 mAActive 1MHz, V CC = 2V 0.3 0.5 mAActive 4MHz, V CC = 3V 1.7 2.5 mAIdle 1MHz, V CC = 2V 0.04 0.15 mAIdle 4MHz, V CC = 3V 0.3 0.7 mAPower-save mode (3)(4)32kHz TOSC enabled,V CC = 1.8V32kHz TOSC enabled,V CC = 3VNotes: 1. Values with “Minimizing Power Consumption” enabled (0xFF).2. Typical values at 25°C. Maximum values are test limits in production.3. The current consumption values include input leakage current.4. Maximum values are characterized values and not test limits in production.0.8 1.6 µA0.9 2.6 µAPower-down mode (3) WDT enabled, V CC = 3V 4.2 8 µAWDT disabled, V CC = 3V 0.1 2 µA29.3 Speed GradesMaximum frequency is dependent on V CC. As shown in Figure 29-1, the Maximum Frequency vs.V CC curve is linear between 1.8V < V CC < 2.7V and between 2.7V < V CC < 4.5V.Figure 29-1.Maximum Frequency vs. V CC20 MHz10 MHzSafe Operating Area4 MHz1.8V 2.7V 4.5V5.5V8271D–AVR–05/11322