6.3 Clocks

The MGC3140 is embedding two internal oscillators, high speed and low speed. The High-Speed Oscillator (HSO) is factory-trimmed, achieving high accuracy.

• High-Speed Oscillator (HSO): The MGC3140 is clocked by an internal HSO running at 40 MHz (+/- 2%). This clock is used to generate the Tx signal, to trigger the ADC conversions and to run the SPU. During Deep Sleep mode, the HSO clock is switched off.
• Low-Speed Oscillator (LSO): This low-speed and ultra-low-power oscillator is typically 32 kHz (+/- 15%). It is used during power-saving modes.