RL78/G1P
CHAPTER 5 CLOCK GENERATOR
R01UH0895EJ0100 Rev.1.00
112
Nov 29, 2019
Figure 5-12 shows examples of incorrect resonator connection.
Figure 5-12. Examples of Incorrect Resonator Connection (1/2)
(a) Too long wiring
(b) Crossed signal line
X2
V
SS
X1
X1
NG
NG
NG
V
SS
X2
PORT
(c) The X1 and X2 signal line wires cross.
(d) A power supply/GND pattern exists
under the X1 and X2 wires.
X2
V
SS
X1
X1
Power supply/GND pattern
V
SS
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.