The tables and formulas below can be used to calculate the additional current consumption for the different I/O modules in Active and Idle mode. The enabling or disabling of the I/O modules are controlled by the Power Reduction Register.
| PRR bit | Typical numbers | ||
|---|---|---|---|
| VCC = 2V, F = 1MHz | VCC = 3V, F = 4MHz | VCC = 5V, F = 8MHz | |
| PRUSART0 | 5.8µA | 30µA | 119µA |
| PRTWI | 6.6µA | 38µA | 150µA |
| PRTIM2 | 7.4µA | 43µA | 170µA |
| PRTIM1 | 4.1µA | 26µA | 98µA |
| PRTIM0 | 2.9µA | 13µA | 50µA |
| PRSPI | 5.3µA | 35µA | 145µA |
| PRADC | 7.1µA | 50µA | 197µA |
| PRSPI1 | 2.8µA | 25µA | 104µA |
| PRUSART1 | 3.8µA | 28µA | 104µA |
| PRTIM3 | 4.6µA | 28µA | 107µA |
| PRTIM4 | 3.6µA | 29µA | 108µA |
| RUSART2 | 4.7µA | 30µA | 122µA |
| PRTWI1 | 6.5µA | 41µA | 158µA |
| PRPTC | 39µA | 248µA | 990µA |