upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 107

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

5.4.3 Example of incorrect resonator connection
RC oscillation, respectively.
Figures 5-11 and 5-12 show examples of incorrect connection for the crystal/ceramic oscillation and for external
Remark When using the subsystem clock, replace X1 and X2 with XT1 and XT2, respectively. Also, insert
(c) Wiring near high alternating current
resistors in series on the XT2 side.
Figure 5-11. Examples of Incorrect Connection for Crystal/Ceramic Oscillation (1/2)
V
SS
(a) Too long wiring
V
SS
X1
X1
X2
CHAPTER 5 CLOCK GENERATOR
X2
User’s Manual U16961EJ4V0UD
(d) Current flowing through ground line of oscillator
(potential at points A, B, and C fluctuates)
V
SS
A
V
High current
X1
(b) Crossed signal line
SS
B
X1
Pmn
X2
C
PORT
X2
V
DD
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