UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 190

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

188
Remark When using the subsystem clock, replace X1 and X2 with XT1 and XT2, respectively. Also, insert
Caution When X2 and XT1 are wired in parallel, the crosstalk noise of X2 may increase with XT1, resulting
(c) Wiring near high alternating current
resistors in series on the XT2 side.
in malfunctioning.
(e) Signals are fetched
V
V
SS
SS
Figure 5-11. Examples of Incorrect Resonator Connection (2/2)
X1
X1
X2
X2
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 5 CLOCK GENERATOR
(d) Current flowing through ground line of oscillator
(potential at points A, B, and C fluctuates)
V
SS
A
High current
X1
B
Pmn
X2
C
V
DD