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SM1124 - Multimelody IC for Pagers

General Description

Number 1 2 3 4 5 6 7 8 Name CLK SI SC ST TEST MTO VDD VSS I/O I I I I I O Function External reference clock input (Schmitt-trigger circuit and gate circuit built-in) Playback control serial interface data input pin1 Playback control serial interface clock input pin1 Playback star

Key Features

  • s 4 5 TEST s s s s s s s s Maximum of 16 tune selections (with up to 512 steps) Level hold playback mode External reference clock input. The frequency can be selected from the following 12 settings.
  • Playback frequency of each song varies (8 frequencies) - 32.768 kHz system: 32.768 and 65.536 kHz - 37.5 kHz system: 37.5 and 75.0 kHz - 38.4 kHz system: 38.4 and 76.8 kHz - 48.0 kHz system: 48.0 and 96.0 kHz.
  • Playback frequency of all songs is fixed (4 frequencies) - 32.768 k.

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Datasheet Details

Part number SM1124
Manufacturer Nippon Precision Circuits Inc
File Size 92.52 KB
Description Multimelody IC for Pagers
Datasheet download datasheet SM1124 Datasheet

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Other Datasheets by Nippon Precision Circuits Inc

Part Number Description
SM1125 Multimelody IC for Pagers
SM1126 Melody IC with Built-in SRAM
SM1131 High Sound Quality Multi Melody
SM1140 Chord Melody
SM1155 Melody LSIs

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SM1124 Series NIPPON PRECISION CIRCUITS INC. Multimelody IC for Pagers OVERVIEW The SM1124 Series are melody pager multi-melody ICs fabricated in NPC’s Molybdenum-gate CMOS. A maximum of 16 tunes can be stored in programmable ROM, and the Molybdenum-gate CMOS process realizes small-sized packages and low power dissipation. PINOUT 8-pin SOP CLK SI SC ST 1 8 VSS VDD MTO 124 FEATURES s 4 5 TEST s s s s s s s s Maximum of 16 tune selections (with up to 512 steps) Level hold playback mode External reference clock input. The frequency can be selected from the following 12 settings. • Playback frequency of each song varies (8 frequencies) - 32.768 kHz system: 32.768 and 65.536 kHz - 37.5 kHz system: 37.5 and 75.0 kHz - 38.4 kHz system: 38.4 and 76.8 kHz - 48.0 kHz system: 48.