Datasheet

RL78/L12 CHAPTER 5 CLOCK GENERATOR
R01UH0330EJ0200 Rev.2.00 151
Dec 13, 2013
Figure 5-13. Examples of Incorrect Resonator Connection (2/2)
(e) Wiring near high alternating current (f) Current flowing through ground line of oscillator
(potential at points A, B, and C fluctuates)
V SS X1 X2
V
SS X1 X2
AB C
Pmn
V
DD
High current
High current
(g) Signals are fetched
VSS X1 X2
Caution When X2 and XT1 are wired in parallel, the crosstalk noise of X2 may increase with XT1, resulting in
malfunctioning.
Remark When using the subsystem clock, replace X1 and X2 with XT1 and XT2, respectively. Also, insert resistors
in series on the XT2 side.