MC9S08DZ128 Datasheet, PDF (184/458 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 8 Multi-Purpose Clock Generator (S08MCGV2)
8.4.7 Fixed Frequency Clock
The MCG presents the divided reference clock as MCGFFCLK for use as an additional clock source. The
MCGFFCLK frequency must be no more than 1/4 of the MCGOUT frequency to be valid. When
MCGFFCLK is valid then MCGFFCLKVALID is set to 1. When MCGFFCLK is not valid then
MCGFFCLKVALID is set to 0.
MC9S08DZ128 Series Data Sheet, Rev. 1
184
Freescale Semiconductor