orcad microcontroller
In OrCAD only the components in the folder PSPICE can be simulated (only thse have models).I guess you designed the schematic using components available only for schematic capture.
If you need only to simulate the current used by the uC, replace it with a current sink, with a current determined from the datasheet, depending on the clock freq, sleep mode, etc.
Microcontrollers can't be simulated in orcad PSPICE, the only digital circuits that can be simulated are classical TTL&CMOS and circuits that have VHDL models.
Maybe you can simulate the microcontroller in Proteus.
To simulate a microcontroller you need to provide the code that runs in the uC.