MC81F4104 Datasheet, PDF (67/118 Pages) Finechips – ABOV SEMICONDUCTOR

MC81F4104
Xout and Xin pins can be used as normal pins
Figure 13-4 Internal RC Oscillator
13.2 PCB Layout
For reference, here is an example layout for oscillator circuit.
Figure 13-5 Layout of Oscillator PCB circuit
Note :
Minimize the wiring length. Do not allow the wiring to intersect with other signal conductors.
Do not allow the wiring to come near changing high current. Set the potential of the
grounding position of the oscillator capacitor to that of VSS. Do not ground it to any ground
pattern where high current is present. Do not fetch signals from the oscillator.
October 19, 2009 Ver.1.35
67