hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 104

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

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
Figure 4.5 Board Design of Oscillator Circuit
C
C
C
C
1
2
1
2
2
.
Frequency
1.0 MHz
4.0 MHz
R = 1 M
f
Signal A Signal B
Ceramic
oscillator
Murata
Murata
20%
C
Recommendation
value
150 pF 10%
30 pF 10%
1
OSC
OSC
, C
2
1
2
Products Name
CSB 1000J
CSA 4.00MG
89