NEC mPD780852 Series Preliminary User's Manual page 95

CHAPTER 5 CLOCK GENERATOR
Figure 5-5. Incorrect Examples of Resonator Connection (1/2)
(a) Too long wiring (b) Crossed signal line
PORTn
(n = 0 to 6, 8 and 9)
IC X2 X1 IC X2 X1
(c) Wiring near high alternating current (d) Current flowing through ground line of
oscillator (potential at points A, B, and C
fluctuates)
V
DD
Pmn
IC X2 X1
IC X2 X1
A B C
High current
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Preliminary User's Manual U14581EJ3V0UM00