Renesas RL78/G1P Hardware User Manual page 131

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