35.6 Peripherals Power Consumption
Use the table below to calculate the additional current consumption for the different I/O peripherals in the various operating modes. Some peripherals will request the clock to be enabled when operating in STANDBY. Refer to the peripheral section for further information.
Operating conditions:
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|---|---|---|---|---|---|---|---|---|
| Symbol | Description | Min. | Typ.✝ | Max. 85°C | Max. 125°C | Unit | Conditions | |
| IDD_WDT | Watchdog Timer (WDT) | — | 270 | — | — | nA | 32.768 kHz internal oscillator | |
| IDD_VREF | Voltage Reference (VREF) | — | — | — | — | µA | ||
| — | — | — | — | µA | ||||
| — | — | — | — | µA | ||||
| IDD_BOD | Brown-out Detector (BOD) | — | 14 | — | — | μA | Brown-out Detect (BOD) continuous | |
| — | 0.60 | — | — | μA | Brown-out Detect (BOD) sampling @128 Hz, including IDD_OSC32K | |||
| — | 0.42 | — | — | μA | Brown-out Detect (BOD) sampling @32 Hz, including IDD_OSC32K | |||
| IDD_TCA | 16-bit Timer/Counter Type A (TCA) | — | 38 | — | — | μA | Device in Idle sleep mode | |
| IDD_TCB | 16-bit Timer/Counter Type B (TCB) | — | 19 | — | — | μA | ||
| IDD_RTC | Real-Time Counter (RTC) | — | 0.6 | — | — | μA | 32.768 kHz internal oscillator (OSC32K) | |
| IDD_OSC32K | 32.768 kHz Internal Oscillator (OSC32K) | — | 270 | — | — | nA | ||
| IDD_XOSC32K | 32.768 kHz Crystal Oscillator (XOSC32K) | — | — | — | — | µA | ||
| IDD_OSCHF | Internal High Frequency Oscillator (OSCHF) | — | — | — | — | µA | ||
| IDD_XOSCHF | High Frequency Crystal Oscillator (XOSCHF) | — | — | — | — | µA | ||
| IDD_ADC | Analog-to-Digital Converter (ADC) | — | 270 | — | — | μA |
CLK_ADC = 1 MHz, device in Idle sleep mode |
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| IDD_AC | Analog Comparator (AC) | — | 160 | — | — | μA |
CTRLA.POWER = device in Idle sleep mode |
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| — | — | — | — | μA |
CTRLA.POWER = device in Idle sleep mode |
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| — | 110 | — | — | μA |
CTRLA.POWER = device in Idle sleep mode |
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| IDD_DAC | Digital-to-Analog Converter (DAC) | — | 104 | — | — | μA |
VDACREF = 1.024 V, device in Idle sleep mode |
|
| — | 125 | — | — | μA |
VDACREF = 4.096 V, device in Idle sleep mode |
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| — | 98 | — | — | µA |
VDACREF = VDD, device in Idle sleep mode |
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| IDD_USART | Universal Synchronous and Asynchronous Receiver and Transmitter (USART) | — | — | — | — | µA | USART Enabled @9600 Baud | |
| IDD_SPI | Serial Peripheral Interface (SPI) | — | 7 | — | — | μA |
SPI Host @100 kHz, device in Idle sleep mode |
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| IDD_TWI | Two-Wire Interface (TWI) | — | 27 | — | — | μA |
TWI Host @100 kHz, device in Idle sleep mode |
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| — | 21 | — | — | μA |
TWI Client @100 kHz, device in Idle sleep mode |
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| IDD_NVM_ERASE | Flash Programming Erase | — | 1.5 | — | — | mA | ||
| IDD_NVM_WRITE | Flash Programming Write | — | 3.0 | — | — | mA | ||
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✝ Data in the “Typ.” column is at TA = 25°C and VDD = 3.0V unless otherwise specified. These parameters are not tested and are for design guidance only. Note:
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