MC81F4x16
14. OSCILLATION CIRCUITS
There are few example circuits for main and sub oscillators.
Oscillation circuit is designed to be used either with a ceramic resonator or crystal oscillator. Since
each crystal and ceramic resonator have their own characteristics, the user should consult the crystal
manufacturer for appropriate values of external components.
14.1 Main Oscillation Circuits
C1, C2 = 10 ~ 30 pF
XIN
XOUT
* The example load capacitor value(C1, C2) is
common value but may not be appropriate for
some crystal or ceramic resonator.
C1
C2
Figure 14-1 Crystal/Ceramic Oscillator
XIN
XOUT
Figure 14-2 External Clock
Xout pin can be used as a normal pin.
Figure 14-3 External RC Oscillator
October 19, 2009 Ver.1.35
107
FINECHIPS [ FINECHIPS ]
