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SM1155 Datenblatt(PDF) 1 Page - Nippon Precision Circuits Inc

Teilenummer SM1155
Bauteilbeschribung  Melody LSIs
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Hersteller  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM1155 Datenblatt(HTML) 1 Page - Nippon Precision Circuits Inc

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SM1155 series
NIPPON PRECISION CIRCUITS—1
NIPPON PRECISION CIRCUITS INC.
Melody LSIs
OVERVIEW
The SM1155 series are CMOS melody LSIs that, together with a battery and piezoelectric buzzer, operate in
one of 3 melody modes determined by bonding options. They also feature an oscillator stop function 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 applications including
the hold sound for telephones and toys.
FEATURES
I
Requires few external components
I
1.2 to 3.6V wide operating voltage range
I
Low power consumption
I
3 melody modes (bonding option)
I
Oscillator stop function in non-play mode
I
Power saving pull-down resistor built-in
I
RC oscillator circuit
I
Power-ON initialization function
I
Wide pitch dynamic range (G3 to D7)
I
8-pin SOP package
ORDERING INFORMATION
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
D e vice
P a ck ag e
SM1155
×××1S
8-pin SOP
SM1155
×××2S
SM1155
×××3S
1
T1
VSS
OUT
TC
4
2
3
OUT
VDD
8
7
6
5
TG
T2
5.2
± 0.3
0.695typ
1.27
0.4
± 0.1
0.12 M
0.10
0.15 − 0.05
+ 0.1
0 to 10


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