Power Consumption of Peripherals

The table below can be used 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 1MHz used as system clock source, except where otherwise specified.

Table 1. Power Consumption of Peripherals
Peripheral	Conditions	Typ.⁽¹⁾	Unit
BOD	Continuous	19	µA
BOD	Sampling @ 1kHz	1.2	µA
TCA	16bit count @ 1MHz	12.6	µA
TCB	16bit count @ 1MHz	7.4	µA
RTC	16bit count @ OSCULP32K	1.2	µA
WDT (including OSCULP32K)		0.7	µA
OSC20M		125	µA
AC	Fast Mode⁽²⁾	92	µA
AC	Low Power Mode⁽²⁾	45	µA
ADC	50ksps	325	µA
ADC	100ksps	340	µA
OSCULP32K		0.4	µA
USART	Enable @ 9600 Baud	13	µA
SPI (Master)	Enable @ 100kHz	2.1	µA
TWI (Master)	Enable @ 100kHz	23.9	µA
TWI (Slave)	Enable @ 100kHz	17.1	µA
Flash programming	Erase Operation	1.5	mA
Flash programming	Write Operation	3.0	mA

Note:

1.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.
2.CPU in Standby mode.