MC81F4216 Datasheet, PDF (109/200 Pages) Finechips – ABOV SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS

14.3 PCB Layout
For reference, here is a example layout for oscillator circuit.
MC81F4x16
Figure 14-7 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
109