Digital Power Supply

For higher pin count package types, there are several VDD and corresponding GND pins. All the VDD pins in the microcontroller are internally connected. The same voltage must be applied to each of the VDD pins.

The figure below shows the recommended connection of the power supply to the device’s VDD pin(s).

Figure 1. Recommended VDD Connection Circuit Schematic
Important: For systems that frequently cycle VDD or experience fast VDD transients, it is recommended to add a decoupling capacitor (C3) if the power supply slew rate exceeds the slew rate limits. Refer to the Supply Voltage section in the Electrical Characteristics for details about the power supply's slew rate limits.