MB88155 Ver la hoja de datos (PDF) - Fujitsu

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MB88155

Spread Spectrum Clock Generator

Fujitsu 

■ PIN ASSIGNMENT

MB88155

XIN 1

XOUT 2

ENS 3

SEL 4

MB88155

-xx0

-xx1

8 VDD

7 CKOUT

6 VSS

5 REFOUT

XIN 1

XOUT 2

XPD 3

SEL 4

FPT-8P-M07

MB88155

-xx2

-xx3

8 VDD

7 CKOUT

6 VSS

5 REFOUT

■ PIN DESCRIPTION

Pin name

I/O

XIN

I

XOUT

O

ENS/XPD

I

SEL

I

REFOUT

O

VSS



CKOUT

O

VDD



Pin no.

1

2

3

4

5

6

7

8

Description

Connection pin of resonator/clock input pin

Connection pin of resonator

Modulation enable pin/power down pin

Modulation rate setting pin

Down spread, SEL = “L” : Modulation rate − 1.0%

Down spread, SEL = “H” : Modulation rate − 2.0%

Down spread, SEL = “L” : Modulation rate ± 0.5%

Down spread, SEL = “H” : Modulation rate ± 1.0%

Non-modulated clock output pin

This pin becomes to“L” at power-down.

GND Pin

Modulated clock output pin

This pin becomes to“L” at power-down.

Power supply voltage pin

3

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