hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 106

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

4.3
1. Connecting a 32.768-kHz/38.4 kHz crystal oscillator
Clock pulses can be supplied to the subclock divider by connecting a 32.768-kHz/38.4 kHz crystal
oscillator, as shown in figure 4.7. Follow the same precautions as noted under 3. notes on board
design for the system clock in 4.2.
Figure 4.8 shows the equivalent circuit of the 32.768-kHz/38.4 kHz crystal oscillator.
Figure 4.7 Typical Connection to 32.768-kHz/38.4 kHz Crystal Oscillator (Subclock)
Subclock Generator
Figure 4.8 Equivalent Circuit of 32.768-kHz/38.4 kHz Crystal Oscillator
X
X
X
1
2
1
C
C
1
2
L
S
Frequency
32.768 kHz
38.4 kHz
C = C
C
1
S
2
C
= 15 pF (typ.)
0
Crystal oscillator
NDK
Seiko Instrument Inc.
C = 1.5 pF typ
R = 14 k
f
W
0
S
= 32.768 kHz/38.4kHz
R
S
typ
Products Name
MX73P
VTC-200
X
2
91