The SM1350 series are single-chip high tone quality melody ICs, fabricated using NPC’s Molybdenum-gate 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 output is demanded.
The SM1350 series are single-chip high tone quality melody ICs fabricated using NPC's Molybdenum-gate CMOS process. These devices incorporate four sound generators to produce four kinds of output tones controlled by 16-tone data, making them ideal for mechanical clocks and similar applications requiring high-quality audio.
Key features include the ability to select melodies in serial or binary (parallel) mode up to a maximum of 16 melody blocks. The IC supports DWS (dual wave synthesis) sound generators with a note range from G2 to F#7. It offers programmable tempo ranging from 4.8 to 605.6 and includes chattering prevention circuits for reliable operation.
| Supply Voltage | 2.4 to 5.5 V |
|---|---|
| Oscillator Frequency | 4.0 MHz |
| Number of Sound Generators | 4 |
| Maximum Melody Blocks | 16 |
| Note Range | G2 to F#7 |
| Maximum Programmable Melodies | 16 |
| Melody Length Steps | 1024-step |
| Tempo Range | 4.8 to 605.6 |
| Package Type | 24-pin SSOP |
The IC supports a G2 to F#7 note range.
Up to 16 programmable melodies can be selected in serial or binary mode.
The recommended operating supply voltage is between 2.4 V and 5.5 V.