3.4 Electrical Characteristics - Peripherals Power Consumption

Some clarifications have been made to the Peripheral Power Consumption table.

Table 35-6. Peripheral Power Consumption(1)

Operating conditions:
  • VDD = 3.0V
  • TA = 25°C
  • OSCHF at 20 MHz with a prescaler division factor of six used as clock source
  • Device in Standby sleep mode
SymbolDescriptionMin.Typ.✝Max. 85°C Max. 125°CUnitConditions
IDD_WDTWatchdog Timer (WDT)0.68µA32.768 kHz internal oscillator
IDD_BGBandgap19µA
IDD_VREFVoltage Reference (VREF)54µA

DAC0REF.REFSEL = 0x1 (2.048V)

Excluding bandgap

48µA

ACREF.REFSEL = 0x1 (2.048V)

Excluding bandgap

IDD_BODBrown-out Detector (BOD) 14μA

Brown-out Detect (BOD) continuous

Excluding bandgap

0.60μA

Brown-out Detect (BOD) sampling @128 Hz, including IDD_OSC32K

Excluding bandgap

0.406μA

Brown-out Detect (BOD) sampling @32 Hz, including IDD_OSC32K

Excluding bandgap

IDD_TCA16-bit Timer/Counter Type A (TCA)38μADevice in Idle sleep mode
IDD_TCB16-bit Timer/Counter Type B (TCB)19μA
IDD_RTCReal-Time Counter (RTC)18μA32.768 kHz internal oscillator (OSC32K)
IDD_OSC32K32.768 kHz Internal Oscillator (OSC32K)0.42µA
IDD_XOSC32K32.768 kHz Crystal Oscillator (XOSC32K)1.3µA

XOSC32KCTRLA.LPMODE Enabled

ESR = 50 kΩ, CL = 12.5 pF

5.7µA

XOSC32KCTRLA.LPMODE Disabled

ESR = 50 kΩ, CL = 12.5 pF

IDD_OSCHFInternal High Frequency Oscillator (OSCHF)85µA
IDD_XOSCHFHigh Frequency Crystal Oscillator (XOSCHF)µA
IDD_ADCAnalog-to-Digital Converter (ADC)295μA

CTRLC.REFSEL = 0x0

(VDD)

570μA

CTRLC.REFSEL = 0x5

(Internal reference 2.048V)

IDD_ACAnalog Comparator (AC)150μA

CTRLA.POWER = 0x0,

device in Idle sleep mode

110μA

CTRLA.POWER = 0x1,

device in Idle sleep mode

IDD_DACDigital-to-Analog Converter (DAC)106μA

VDACREF = 1.024V,

device in Idle sleep mode

125μA

VDACREF = 4.096V,

device in Idle sleep mode

100µA

VDACREF = VDD,

device in Idle sleep mode

IDD_USARTUniversal Synchronous and Asynchronous Receiver and Transmitter (USART)51µAUSART Enabled @9600 Baud
IDD_SPISerial Peripheral Interface (SPI)14μA

SPI Host @100 kHz,

device in Idle sleep mode

IDD_TWITwo-Wire Interface (TWI)56μA

TWI Host @100 kHz,

device in Idle sleep mode

46μA

TWI Client @100 kHz,

device in Idle sleep mode

IDD_NVM_ERASEFlash Programming Erase 7mA
IDD_NVM_WRITEFlash Programming Write 10mA

Unless otherwise specified, data in the “Typ.” column is at TA = 25°C and VDD = 3.0V. These parameters are not tested and are for design guidance only.

Note:
  1. The module's current consumption only. To calculate the total internal power consumption of the microcontroller, add the power consumption values of all the peripherals and the clock sources used to the base power consumption given in 35.5. Power Consumption.
  2. Average power consumption with the following conditions:
    • Single-ended 12-bit ADC
    • ADC active in Free Running mode
    • CLK_ADC = 1 MHz
    • Device in Idle sleep mode