CF1155 series

NIPPON PRECISION CIRCUITS—1

NIPPON PRECISION CIRCUITS INC.

Melody LSIs

OVERVIEW

The CF1155 series are CMOS melody LSIs that, together with a battery and piezoelectric buzzer, operate in

one of 3 melody modes determined by input level or bonding options. They also feature an oscillator stop func-

tion in non-play mode and a variable pull-down resistance function that responds to input levels in order to

reduce power consumption, reduce cost, and extend battery life, making them ideal in a wide range of applica-

tions including greeting cards and toys.

FEATURES

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Requires few external components

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1.2 to 3.6V wide operating voltage range

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Low power consumption

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3 melody modes (bonding option)

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Oscillator stop function in non-play mode

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Power saving pull-down resistor built-in

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RC oscillator circuit

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Power-ON initialization function

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Chip form

PAD LAYOUT and COORDINATES

(Unit: µm)

ORDERING INFORMATION

Chip size: 1.23

× 1.23mm

Chip thickness: 300 ± 30µm

T1, T2, T C , and TO bonding is not required.

VDD

(0,0)

(1230,1230)

1

2

3

4

5

6

78

9

10

11

OUT

OUT

TC

T2

T1

VSS TO OSH

LH

VSS

Number

P a d

X

Y

1

O U T

930

1075

2

OUT

529

1075

3

V D D

155

1075

4

T C

155

887

5

T 2

155

608

6

T 1

155

420

7

V S S

223

155

8

TO

486

155

9

O S H

750

155

10

L H

1041

155

11

V S S

1075

420

D e vice

P a ck ag e

CF1155

Chip form