32.7 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. See the peripheral chapter for further information.
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
| Peripheral | Conditions | Typ.(1) | Unit |
|---|---|---|---|
| BOD | Continuous | 19 | µA |
| Sampling @ 1 kHz | 1.2 | ||
| TCA | 16-bit count @ 1 MHz | 13.0 | µA |
| TCB | 16-bit count @ 1 MHz | 7.4 | µA |
| RTC | 16-bit count @ OSCULP32K | 1.2 | µA |
| WDT (including OSCULP32K) | 0.7 | µA | |
| OSC20M | 130 | µA | |
| AC | Fast mode(2) | 92 | µA |
| Low-Power mode(2) | 45 | ||
| ADC(3) | 50 ksps | 330 | µA |
| 100 ksps | 340 | ||
| XOSC32K | CL = 7.5 pF | 0.5 | µA |
| OSCULP32K | 0.4 | µA | |
| USART | Enable @ 9600 Baud | 13.0 | µA |
| SPI (Host) | Enable @ 100 kHz | 2.1 | µA |
| TWI (Host) | Enable @ 100 kHz | 24.0 | µA |
| TWI (Client) | Enable @ 100 kHz | 17.0 | µA |
| Flash programming | Erase Operation | 1.5 | mA |
| Write Operation | 3.0 | ||
Note:
- Current consumption of the module only. To calculate the total internal power consumption of the microcontroller, add this value to the base power consumption given in the “Power Consumption” section in electrical characteristics.
- CPU in Standby mode.
- Average power consumption with ADC active in Free-Running mode.