Peripherals Power Consumption

Use the table below to calculate the additional current consumption for the different I/O peripherals in the various operating modes.

Operating conditions:

V_DD = 3V
T = 25°C
OSC20M at 1 MHz used as the system clock source, except where otherwise specified
In Idle sleep mode, except where otherwise specified

Table 1. Peripherals Power Consumption
Peripheral	Conditions	Typ.⁽¹⁾	Unit
BOD	Continuous	19	µA
BOD	Sampling @ 1 kHz	1	µA
TCA	16-bit count @ 1 MHz	13	µA
TCB	16-bit count @ 1 MHz	7.5	µA
RTC	16-bit count @ 32.768 kHz @ OSCULP32K	1	µA
WDT (including OSCULP32K)		1	µA
OSC20M		125	µA
AC		45	µA
ADC	50 ksps	325	µA
ADC	100 ksps	340	µA
OSCULP32K		0.5	µA
USART	Enable @ 9600 Baud	13	µA
SPI (Host)	Enable @ 100 kHz	2	µA
TWI (Host)	Enable @ 100 kHz	24	µA
TWI (Client)	Enable @ 100 kHz	17	µA
Flash programming	Erase Operation	1.5	mA
Flash programming	Write Operation	3.0	mA

Note:

1.The current consumption of the module only. To calculate the total power consumption of the system, add this value to the base power consumption as listed in Power Consumption.