HD6432621 Hitachi, HD6432621 Datasheet - Page 729

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

20.7
(1) Connecting 32.768kHz Crystal Oscillator
To supply a clock to the subclock oscillator, connect a 32.768kHz crystal oscillator, as shown in
figure 20-8. See section 20.3.1, Note on Board Design for notes on connecting crystal oscillators.
Figure 20-9 shows the equivalence circuit for a 32.768kHz oscillator.
OSC1
Subclock Oscillator (H8S/2626 Series Only)
Figure 20-8 Example Connection of 32.768 kHz Crystal Oscillator
Figure 20-9 Equivalence Circuit for 32.768 kHz Oscillator
OSC2
OSC1
L
s
C
s
C
o
C
C
1
2
R
s
C
R
f
Type No.: MX38T (Nihon Dempa Kogyo)
C
w
o
s
1
= 32.768 kHz
= 14 k (typ.)
= 1.5 pF (typ.)
= C
2
= 15 pF (typ)
OSC2
685