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YM2149 Datasheet Software-controlled Sound Generator

Manufacturer: Yamaha

Overview: YAMAHK i. s I YM2149 Software-Controlled Sound Generator (SSG) •OVERVIEW The SSG (Software-Controlled Sound Generator) is an NMOS-LSI device designed to be capable of music generation. It only requires the microprocessor or microputer (CPU) to initialize its register array, thus reducing the load on the CPU. Music generation is carried out by the three sequence square wave generator, noise generator, and envelope generator according to the set parameters. This allows for the generation of music, special effects, warnings, and various other types of sounds.

Datasheet Details

Part number YM2149
Manufacturer Yamaha
File Size 2.93 MB
Description Software-Controlled Sound Generator
Datasheet YM2149_Yamaha.pdf

General Description

OF PINS I.

DA7 ~DAO This is an 8 bit bidirectional data bus which is used for moving

Key Features

  • 5V single power supply.
  • Easy connection to 8 bit or 16 bit CPU.
  • Simple connection to external system through 2 sequence 8 bit 1/0 port.
  • Wide voicing range of 8 octaves.
  • Smooth attenuation by 5 bit envelope generator.
  • Built-in 5 bit D/A convertor.
  • Input of double frequency clock can be handled by built-in clock frequency divider.
  • TTL compatible level.
  • Low power consumption (typical 125mW).
  • 40 pin plastic O.

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YM2149 Distributor