Connection for XTAL32K (External 32.768 kHz Crystal Oscillator)

Ultra-low power 32.768 kHz oscillators typically dissipate significantly below 1 μW, and the current flowing in the circuit is, therefore, extremely small. The crystal frequency is highly dependent on the capacitive load.

The following figure shows how to connect an external 32.768 kHz crystal oscillator.

Figure 1. Recommended External 32.768 kHz Oscillator Connection Circuit Schematic