21.2 Features
- Generates CPU,
Advanced High-performance Bus (AHB), and Advanced Peripheral Bus (APB) system clocks
- Clock source and division factor from GCLK0, (GCLK GENERATOR 0)
- Clock prescaler with 1x to 128x division
- Safe run-time clock switching from GCLK0
- Module-level clock gating through maskable peripheral clocks