38.4.3 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. 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 | Units | Conditions | |
| IDD_WDT | Watchdog Timer (WDT) | — | 600 | 900 | 1500 | nA | 32 kHz Internal Oscillator | |
| IDD_VREF | Voltage Reference (VREF) | — | 175 | 300 | 320 | μA | ADC0REF enabled, VREF = 2.048V | |
| — | 71 | 90 | 92 | μA | ACREF enabled, VREF = 2.048V | |||
| — | 40 | 60 | 62 | μA | DACREF enabled, VREF = 2.048V | |||
| IDD_BOD | Brown-out Detector (BOD) | — | 17 | 25 | 27 | μA | Brown-out Detect (BOD) continuous | |
| — | 1.6 | 10 | 12 | μA | Brown-out Detect (BOD) sampling @128 Hz | |||
| — | 0.95 | 10 | 12 | μA | Brown-out Detect (BOD) sampling @32 Hz | |||
| IDD_TCA | 16-bit Timer/Counter Type A (TCA) | — | 6 | — | — | μA | CLK_PER = HFOSC/4 = 1 MHz | |
| IDD_TCB | 16-bit Timer/Counter Type B (TCB) | — | 3.6 | — | — | μA | ||
| IDD_TCD | 12-bit Timer/Counter Type D (TCD) | — | 4.6 | — | — | μA | ||
| IDD_RTC | Real-Time Counter (RTC) | — | 0.7 | 2.5 | 3 | μA | RTC running at 1.024 kHz | |
| IDD_OSC32K | 32 kHz Internal Oscillator (OSC32K) | — | 1.1 | 1.5 | 1.7 | μA | ||
| IDD_XOSC32K | 32 kHz Crystal Oscillator (XOSC32K) | — | — | 4.4 | 4.5 | μA | XOSC32KCTRLA.LPMODE =
0 |
|
| — | — | 1.8 | 2 | nA | XOSC32KCTRLA.LPMODE =
1 |
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| IDD_ADC | Analog-to-Digital Converter (ADC) | — | 300 | 600 | 650 | nA | ADC - Nonconverting | |
| — | 1.1 | 1.4 | 1.6 | μA | ADC @60 ksps(2) | |||
| — | 1.1 | 1.5 | 1.6 | μA | ADC @120 ksps(2) | |||
| IDD_AC | Analog Comparator (AC) | — | 70 | 105 | 110 | μA | CTRLA.POWER =
0x0 |
|
| — | 17 | 30 | 32 | μA | CTRLA.POWER =
0x1 |
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| — | 12 | 20 | 22 | μA | CTRLA.POWER =
0x2 |
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| IDD_DAC | Digital-to-Analog Converter (DAC) | — | 120 | 140 | 160 | μA | DAC + DACOUT, VDACREF = VDD/2 | |
| — | — | 13 | 34 | μA | DAC, VDACREF = VDD/2 | |||
| IDD_UART | Universal Synchronous and Asynchronous Receiver and Transmitter (USART) | — | 8.2 | — | — | μA | USART Enabled @9600 Baud | |
| IDD_SPI | Serial Peripheral Interface (SPI) | — | — | — | — | μA | SPI Host @100 kHz | |
| IDD_TWI | Two-Wire Interface (TWI) | — | 8 | — | — | μA | TWI Host @100 kHz | |
| — | 6 | — | — | μA | TWI Client @100 kHz | |||
| IDD_NVM_ERASE | Flash Programming Erase | — | 6.8 | — | — | μA | ||
| IDD_NVM_WRITE | Flash Programming Write | — | 9.2 | — | — | μA | ||
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Note:
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