SWRA495K December 2015 – April 2024 CC1310 , CC1350 , CC2620 , CC2630 , CC2640 , CC2640R2F , CC2640R2F-Q1 , CC2642R-Q1 , CC2650 , CC2662R-Q1
Figure 2-2 shows a simplified block diagram of the 32.768-kHz crystal oscillator. The oscillator circuit consists of an inverting amplifier, a feedback net, capacitors, and a crystal. The 32-kHz crystal lacks internal capacitors and requires external loading capacitors.