User Manual

Page 19
6. Oscillators
Board is equipped with 16MHz crystal
oscillator (X1) circuit that provides
external clock waveform to the
microcontroller OSC1 and OSC2 pins.
This base frequency is suitable for further
clock multipliers and ideal for generation
of necessary USB clock, which ensures
proper operation of bootloader and your
custom USB-based applications.
Figure 6-1:
16MHz crystal
oscillator module (X1)