The figure below shows a typical connection diagram for the power pins of the CP2102N devices when the internal 5 V-to-3.3 V regula-

tor is not used.

CP2102N Device

Voltage

Regulator

2.2-3.6 V (in)

GND

4.7 µF and 0.1 µF bypass

capacitors required for

each power pin placed as

close to the pins as

possible.

VREGIN

VDD

RSTb

VIO

1 kohm

Figure 2.3. Connection Diagram with Voltage Regulator Not Used

CP2102N Data Sheet

Typical Connection Diagrams

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