37.6 Peripherals Power Consumption

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:
  • VDD=3V
  • T=25°C
  • OSC20M at 1MHz used as system clock source, except where otherwise specified.
Peripheral Conditions Typ.(1) Unit
BOD Continuous 19 µA
Sampling @ 1kHz 1.2
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
Low Power Mode(2) 45 µA
ADC 50ksps 325 µA
100ksps 340 µA
XOSC32K CL=7.5pF 0.5 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
Write Operation 3.0
  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.