RL78/G10 CHAPTER 5 CLOCK GENERATOR
R01UH0384EJ0311 Rev. 3.11 89
Dec 22, 2016
Figure 5-11 shows examples of incorrect resonator connection.
Figure 5-11. Examples of Incorrect Resonator Connection (1/2)
(a) Too long wiring (b) Crossed signal line
X2VSS X1 X1
NG
NG
NG
VSS X2
PORT
(c) The X1 and X2 signal line wires cross. (d) A power supply/GND pattern exists
under the X1 and X2 wires.
X2VSS X1
X1
Power supply/GND pattern
VSS X2
Note
Note Do not place a power supply/GND pattern under the wiring section (section indicated by a broken line in the
figure) of the X1 and X2 pins and the resonators in a multi-layer board or double-sided board.
Do not configure a layout that will cause capacitance elements and affect the oscillation characteristics.
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