upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 71

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

CHAPTER 5 CLOCK GENERATORS
Figure 5-7 shows examples of incorrect resonator connection.
Figure 5-7. Examples of Incorrect Resonator Connection (1/2)
(a) Too long wiring of connected circuit
(b) Crossed signal lines
PORT
V
X1
X2
V
X1
X2
SS
SS
(d) Current flowing through ground line of oscillator
(c) Wiring near high fluctuating current
(Potential at points A, B, and C fluctuates.)
V
DD
PORT
V
X1
X2
SS
V
X1
X2
SS
A
B
C
High current
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User’s Manual U16994EJ3V0UD