HD6432633 Datasheet, PDF (1022/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

23A.7 Subclock Oscillator
(1) Connecting 32.768kHz Quartz Resonator
To supply a clock to the subclock oscillator, connect a 32.768kHz quartz resonator, as shown in
figure 23A-8. See section 23A.3.1, Notes on Board Design for notes on connecting crystal
resonators.
OSC1
OSC2
C1
C2
C1=C2=15pF (typ)
Figure 23A-8 Example Connection of 32.768kHz Crystal Resonator
Figure 23A-9 shows the equivalence circuit for a 32.768kHz resonator.
Ls
Cs
Rs
OSC1
OSC2
Co
Co=1.5pF (typ.)
Rs=14kΩ (typ.)
fw=32.768kHz
Type No.: MX38T (Nihon Dempa Kogyo)
Figure 23A-9 Equivalence Circuit for 32.768kHz Resonator
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