SM1350 Datasheet (Nippon Precision Circuits Inc)

SM1350, High Tone Quality Melody LSI

NIPPON PRECISION CIRCUITS INC.

SM1350 series High Tone Quality Melody LSI OVERVIEW The SM1350 series are single-chip high tone quality melody ICs, fabricated using NPC’s Molybdenumgate CMOS process.

Melodies are selected in serial or binary (parallel) mode, up to a maximum of 16 melody blocks.

There are 4 sound generators incorporated to produce 4 kinds of output tone controlled by 16-tone data, making these ICs ideal for mechanical clocks and similar applications where high tone quality outpu

SM1350 Features

* s Basic Functions

* 4.0 MHz oscillator frequency

* Power-save function - Oscillator stopped when no output - S0 to S3, MODE, LH pull-up resistors open

* BTL or A-class outputs

* Chattering prevention circuit (STN, STOP, S0 to S3)

* 10-bit D/A converte