32.5 Power Consumption

The values are measured power consumption under the following conditions, except where noted:

V_DD = 3V
T_A = 25°C
OSC20M used as the system clock source, except where otherwise specified
System power consumption measured with peripherals disabled and I/O ports driven low with inputs disabled

Table 32-5. Power Consumption in Active and Idle Mode
Mode	Description	Clock Source	PDIV Division	f_{CLK_CPU}	V_DD	Typ.	Max.	Unit
Active	Active power consumption	OSC20M FREQSEL = `0x2`	1	20 MHz	5V	11.4	-	mA
			2	10 MHz	5V	5.7	-	mA
			2	10 MHz	3V	3.2	-	mA
			4	5 MHz	5V	3.8	5	mA
					3V	1.6	-	mA
					2V	1.2	-	mA
		OSC20M FREQSEL = `0x1`	1	16 MHz	5V	8.6	-	mA
			2	8 MHz	5V	4.3	-	mA
			2	8 MHz	3V	2.6	-	mA
		OSCULP32K	1	32.768 kHz	5V	21	-	µA
					3V	12	-	µA
					2V	8	-	µA
Idle	Idle power consumption	OSC20M FREQSEL = `0x2`	1	20 MHz	5V	2.8	-	mA
			2	10 MHz	5V	1.4	-	mA
			2	10 MHz	3V	0.8	-	mA
			4	5 MHz	5V	1.3	3.5	mA
					3V	0.4	-	mA
					2V	0.3	-	mA
		OSC20M FREQSEL = `0x1`	1	16 MHz	5V	2.3	-	mA
			2	8 MHz	5V	1.3	-	mA
			2	8 MHz	3V	0.7	-	mA
		OSCULP32K	1	32.768 kHz	5V	5.6	-	µA
					3V	2.8	-	µA
					2V	1.8	-	µA

Table 32-6. Power Consumption in Power-Down, Standby and Reset Mode
Mode	Description	Condition		Typ. 25°C	Max. 25°C	Max. 85°C⁽¹⁾	Max. 125°C	Unit
Standby	Standby power consumption	RTC running at 1.024 kHz from external XOSC32K (CL = 7.5 pF)	V_DD = 3V	0.7	-	-	-	µA
Standby	Standby power consumption	RTC running at 1.024 kHz from internal OSCULP32K	V_DD = 3V	0.7	3	6	16	µA
Power-Down/Standby	Power-down/Standby power consumption are the same when all peripherals are stopped	All peripherals stopped	V_DD = 3V	0.1	2	5	15	µA
Reset	Reset power consumption	RESET line pulled low	V_DD = 3V	100	-	-	-	µA

Note:

These values are based on characterization and are not covered by production test limits.

ATmega4808/4809