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5.4.3 Examples of incorrect resonator connection
Figure 5-7 shows examples of incorrect resonator connection.
Figure 5-7. Examples of Incorrect Resonator Connection (1/2)
(a) Too long wiring
IC
V
SS1
(c)
Wiring near high fluctuating current
IC
X2
V
SS1
Remark When using the subsystem clock, replace X1 and X2 with XT1 and XT2, respectively. Further, insert
resistors in series on the side of XT2.
120
CHAPTER 5 CLOCK GENERATOR
X2
X1
X1
User's Manual U15798EJ2V0UD
(b) Crossed signal line
IC
X2
V
SS1
(d) Current flowing through ground line of
oscillator (potential at points A, B, and
C fluctuates)
Pmn
IC
X2
A
B
High current
V
SS1
PORTn
(n = 0 to 7)
X1
V
DD0
X1
C
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