SYSCLOCK

The oscillator used for generation of the system clock. This oscillator must be running. You MUST use CONFIG OSC before you use CONFIG SYSCLOCK. The CONFIG SYSCLOCK will wait till the oscillator is running stable.

Possible values:

- 2MHZ

- 32MHZ

- EXTERNAL

- PLL

PRESCALEA

The Xmega has 3 prescalers. With PRESCALEA you configure the clock division of the first prescaler.

Possible values:

1 , 2 ,4, 8, 16, 32, 64, 128,256,512

PRESCALEBC

The Xmega has 3 prescalers. With PRESCALEBC you configure the clock division of the second and the third prescaler.

Possible values:

- 1_1 (1 + 1 division)

- 1_2 (1+2 division)

- 4_1 (4 + 1 division)

- 2_2 (2 + 2 division)

This 1_2 will make the second prescaler divide by 1 and the third prescaler divide by 2.