HD6433935 Hitachi, HD6433935 Datasheet - Page 99

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

2. Connecting a ceramic oscillator
Figure 4-4 shows a typical method of connecting a ceramic oscillator.
3. Notes on board design
When generating clock pulses by connecting a crystal or ceramic oscillator, pay careful attention
to the following points.
Avoid running signal lines close to the oscillator circuit, since the oscillator may be adversely
affected by induction currents. (See figure 4-5.)
The board should be designed so that the oscillator and load capacitors are located as close as
possible to pins OSC
OSC
OSC
1
2
To be avoided
R
f
Figure 4-4 Typical Connection to Ceramic Oscillator
1
and OSC
C
C
Figure 4-5 Board Design of Oscillator Circuit
1
2
C
C
1
2
2
.
Oscillation
frequency
4.0 MHz
R = 1 M
f
Signal A Signal B
Manufacturer
Murata Seisakusho
20%
OSC
OSC
1
2
Recommended value
for C
30 pF 10%
1
and C
2
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