53.7.2 Crystal Oscillator

The crystal oscillator schematic is shown below:

Figure 53-8. Crystal Oscillator Schematic

The crystal must be located as close to the device as possible. Long-signal lines may cause too high of a load to operate the crystal, and cause crosstalk to other parts of the system.

Table 53-5. Crystal Oscillator Checklist
Signal Name Recommended Pin Connection Description
XIN Load capacitor. Value depends on Crystal manufacturers recommendation.(1) External crystal between 0.4 to 32 MHz
XOUT Load capacitor. Value depends on Crystal manufacturers recommendation.(1)
Note:
  1. The capacitors must be placed close to the device for each supply pin pair in the signal group.