MC9RS08KA2_08 Datasheet, PDF (82/136 Pages) Freescale Semiconductor, Inc – RS08 Microcontrollers

Internal Clock Source (RS08ICSV1)
9.4.6 Fixed Frequency Clock
The ICS provides the ICSFFCLK output which can be used as an additional clock source to a peripheral
such as a timer, when the ICS is in FEI. ICSFFCLK is not a valid clock source for a peripheral when in
either FBI or FBILP modes. ICSFFCLK is ICSRCLK divided by two.
MC9RS08KA2 Series Data Sheet, Rev. 4
82
Freescale Semiconductor