37.7 Power Consumption of Peripherals
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 system clock source, except where otherwise specified
- In Idle Sleep mode, except where otherwise specified
| Peripheral | Conditions | Typ.(1) | Unit |
|---|---|---|---|
| BOD | Continuous | 19 | µA |
| Sampling @ 1 kHz | 1.2 | ||
| TCA | 16-bit count @ 1 MHz | 12.6 | µA |
| TCB | 16-bit count @ 1 MHz | 7.4 | µA |
| RTC | 16-bit count | 1.2 | µA |
| WDT | 0.7 | 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 |
| USART | Enable @ 9600 Baud | 13 | µA |
| SPI (Master) | Enable @ 100 kHz | 2.1 | µA |
| TWI (Master) | Enable @ 100 kHz | 23.9 | µA |
| TWI (Slave) | Enable @ 100 kHz | 17.1 | µA |
| Flash programming | Erase Operation | 1.5 | mA |
| Write Operation | 3.0 | ||
Note:
- 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.
- CPU in Standby mode.