CF5762AB0

NIPPON PRECISION CIRCUITS INC.—1

Analog Chime Clock CMOS IC

OVERVIEW

The CF5762AB0 is an analog chime clock CMOS IC that uses a 4.194304MHz crystal oscillator source. It can

play a melody and hour chime when triggered by an hourly signal. It generates output sound using dual pitch

synthesis (DPS) to produce high-tone quality melodies and chime signals.

FEATURES

I

4.2MHz fundamental oscillator frequency

I

I

8Hz sweep

I

Melody switching function (SEL1 and SEL2)

• choice of 4 melodies played hourly

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Chime output using time detection circuit

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Dual pitch synthesis (DPS) sound generator

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BTL-configuration melody output circuit

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2 simultaneous output pitches

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Busy (play) signal control output (ATN)

I

Melody stop when dark (CDS and CO4N)

• melody stop using an external CdS element

I

Melody stop at night (AMI and PMI)

I

Reset function

I

Chattering elimination function

PAD LAYOUT

(Unit: mm)

Chip size: 3.44

× 2.58mm

Chip thickness: 300 ± 30µm

(0,0)

(3.44, 2.58)

MT

S4

N.C.

S3

N.C.

S2

S1

N.C. O1 O2

VDD

PMI

AMI

SEL2

SEL1

WSEL

CDS

CO4N

ATN

MSB

MSBN

SPN

SP

VOL

VSS

N.C.

N.C.

N.C.

XT

XTN

N.C.

RESET