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SM1155

Nippon Precision Circuits Inc
Part Number SM1155
Manufacturer Nippon Precision Circuits Inc
Description Melody LSIs
Published Apr 16, 2005
Detailed Description SM1155 series NIPPON PRECISION CIRCUITS INC. Melody LSIs OVERVIEW The SM1155 series are CMOS melody LSIs that, togethe...
Datasheet PDF File SM1155 PDF File

SM1155
SM1155

Overview
SM1155 series 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 nonplay 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 I I I I I I I I 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 (G3 to D7) 8-pin SOP package PINOUT (Top view) T2 T1 TG VSS 1 8 TC VDD OUT OUT 55 2 3 4 7 6 5 ORDERING INFORMATION D e vice S M 1...


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