MB88162 데이터 시트보기 (PDF) - Fujitsu

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MB88162

Spread Spectrum Clock Generator

Fujitsu 

MB88162

■ CRYSTAL OSCILLATION CIRCUIT

The figure below shows the connection example about general crystal resonator. The oscillation circuit has the

built-in feedback resistor (500kΩ) and oscillation stabilization capacitance (4 pF) . Because the value of oscillation

stabilization capacitance must be adjusted to the most suitable value of the individual oscillator, add the capac-

itance (C1 and C2) to LSI external if necessary.

4 pF

XIN Pin

C1

Rf (500kΩ)

4 pF LSI Internal

XOUT Pin

LSI External

C2

■ INTERCONNECTION CIRCUIT EXAMPLE

S0

VSS

SPRD

OUT

S1

15 14 13 12 11 10

16

9

17 MB88162 8

18

7

1234 56

XOUT

XIN

R1

OE

VDD

MLTP

+

C1

C2 C4 C3

C1, C2

C3

C4

R1

: Oscillation stabilization capacitance (see “■ CRYSTAL OSCILLATION CIRCUIT”.)

: Capacitor of 10 µF or higher

: Capacitor of about 0.01 µF (connect a capacitor of good high frequency property (ex.

laminated ceramic capacitor) to close to this device)

: Impedance matching resistor for board pattern

18

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