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 1 MHz used as the system clock source, except where otherwise specified
  • In Idle sleep mode, except where otherwise specified
Table 37-7. Peripherals Power Consumption
Peripheral Conditions Typ.(1) Unit
BOD Continuous 19 µA
Sampling @ 1 kHz 1
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 Fast mode(2) 92 µA
Low-Power mode(2) 45 µA
ADC 50 ksps 325 µA
100 ksps 340 µA
XOSC32K CL = 7.5 pF 0.5 µA
OSCULP32K 0.5 µA
USART Enable @ 9600 Baud 13 µA
SPI (Master) Enable @ 100 kHz 2 µA
TWI (Master) Enable @ 100 kHz 24 µA
TWI (Slave) Enable @ 100 kHz 17 µA
Flash programming Erase Operation 1.5 mA
Write Operation 3.0
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.
  2. The CPU in Standby sleep mode.