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 1. Additional Current Consumption for the different I/O modules (absolute values)
PRR bit	Typical numbers
	V_CC = 2V, f = 1MHz	V_CC = 3V, f = 4MHz	V_CC = 5V, f = 8MHz
PRTIM0	6.6 µA	40.0 µA	153.0 µA
PRADC	29.6 µA	88.3 µA	333.3 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 2. Additional Current Consumption (percentage) in Active and Idle mode
PRR bit	Current consumption additional to active mode with external clock	Current consumption additional to idle mode with external clock
PRTIM0	2.3 %	10.4 %
PRADC	6.7 %	28.8 %