33.3 Supply Current of IO Modules

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.

Table 33-1. Additional Current Consumption for the different I/O modules (absolute values)
PRR bitTypical numbers
VCC = 2V, F = 1MHzVCC = 3V, F = 4MHzVCC = 5V, F = 8MHz
PRUSART05.8µA30µA119µA
PRTWI6.6µA38µA150µA
PRTIM27.4µA43µA170µA
PRTIM14.1µA26µA98µA
PRTIM02.9µA13µA50µA
PRSPI5.3µA35µA145µA
PRADC7.1µA50µA197µA
PRSPI12.8µA25µA104µA
PRUSART13.8µA28µA104µA
PRTIM34.6µA28µA107µA
PRTIM43.6µA29µA108µA
RUSART24.7µA30µA122µA
PRTWI16.5µA41µA158µA
PRPTC39µA248µA990µA