23.3 Supply Current of I/O Modules

Tables and formulas below can be used to calculate additional current consumption for the different I/O modules in Active and Idle mode. Enabling and disabling of I/O modules is controlled by the Power Reduction Register. See Power Reduction Register for details.

Table 23-1. Additional Current Consumption for the different I/O modules (absolute values)
PRR bitTypical numbers
VCC = 2V, f = 1MHzVCC = 3V, f = 4MHzVCC = 5V, f = 8MHz
PRTIM0 6.6 µA40.0 µA153.0 µA
PRADC 29.6 µA88.3 µA333.3 µA

The table below can be used for calculating typical current consumption for other supply voltages and frequencies than those mentioned in the table above.

Table 23-2. Additional Current Consumption (percentage) in Active and Idle mode
PRR bitCurrent consumption additional to active mode with external clock
Current consumption additional to idle mode with external clock

PRTIM02.3 %10.4 %
PRADC 6.7 %28.8 %