Freescale Semiconductor DEMO9S08DZ60 Demo Board DEMO9S08DZ60 DEMO9S08DZ60 Hoja De Datos

Freescale Semiconductor

137

Key features of the MCG module are:

•

Frequency-locked loop (FLL)

— 0.2% resolution using internal 32-kHz reference

— 2% deviation over voltage and temperature using internal 32-kHz reference

— Internal or external reference can be used to control the FLL

•

Phase-locked loop (PLL)

— Voltage-controlled oscillator (VCO)

— Modulo VCO frequency divider

— Phase/Frequency detector

— Integrated loop filter

— Lock detector with interrupt capability

•

Internal reference clock

— Nine trim bits for accuracy

— Can be selected as the clock source for the MCU

•

External reference clock

— Control for external oscillator

— Clock monitor with reset capability

— Can be selected as the clock source for the MCU

•

Reference divider is provided

•

Clock source selected can be divided down by 1, 2, 4, or 8

•

BDC clock (MCGLCLK) is provided as a constant divide by 2 of the DCO output whether in an
FLL or PLL mode.