參數(shù)資料
型號(hào)： SM1155
廠商： Seiko NPC Corporation
英文描述： Melody LSIs
中文描述： LSI的旋律
文件頁(yè)數(shù)： 1/7頁(yè)
文件大?。?/td> 75K
代理商： SM1155
SM1155 series
Melody LSIs
NIPPON PRECISION CIRCUITS—1
NIPPON PRECISION CIRCUITS INC.
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
1.2 to 3.6V wide operating voltage range
Low power consumption
3 melody modes (bonding option)
Oscillator stop function in non-play mode
Power saving pull-down resistor built-in
RC oscillator circuit
Power-ON initialization function
Wide pitch dynamic range (G
8-pin SOP package
I
I
I
I
I
I
I
I
3
to D
7
)
I
ORDERING INFORMATION
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
Device
Package
SM1155
×××
1S
8-pin SOP
SM1155
×××
2S
SM1155
×××
3S
1
T1
VSS
OUT
TC
4
2
3
OUT
VDD
8
7
6
5
5
TG
T2
4
±
6
±
5.2
±
0.3
0.695typ
1
±
1.27
0.4
±
0.1
0.12
M
0.10
0
±
0.15
0.05
+ 0.1
0
±
0 to 10
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