1.1 Key Features

Figure 1-1. Key Feature Identification
  1. 2-Lead XSFN Socket (U1)
  2. Pin 1 Indicator
  3. mikroBUS™ Connector (J1, J2)
  4. SWI-PWM Pull-up Resistor (R3)
  5. Zero-ohm Resistor Jumpers to Select 3.3V or 5V Power (3.3V Enabled by Default via R1)
Note: To enable 5V power, remove R1 and solder a zero-ohm resistor into R2. Populate C2 with a 0.1 μF decoupling capacitor.