hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 103

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

4.2
Clock pulses can be supplied to the system clock divider either by connecting a crystal or ceramic
oscillator, or by providing external clock input.
1. Connecting a crystal oscillator
Figure 4.2 shows a typical method of connecting a crystal oscillator.
Figure 4.3 shows the equivalent circuit of a crystal oscillator. An oscillator having the
characteristics given in table 4.1 should be used.
Table 4.1
Frequency (MHz)
RS max ( )
C
88
0
(pF)
OSC
OSC
1
2
OSC
System Clock Generator
Crystal Oscillator Parameters
1
R
f
Figure 4.2 Typical Connection to Crystal Oscillator
Figure 4.3 Equivalent Circuit of Crystal Oscillator
C
C
1
2
L
S
Frequency
1.0 MHz
4.0 MHz
1
40
3.5 pF max
R = 1 M
f
C
S
Crystal
oscillator
NDK
NDK
20%
C
0
C
Recommendation
value
27 pF 10%
12 pF 20%
R
1
S
, C
4.193
100
16 pF
2
Products Name
NR-18 (NDK45)
NR-18 (NDK03)
OSC
2