Overview: VAMAHA"L~I
YM3439
Software-Controlled Sound Generator (SSGC)
• OUTLINE
Yl13-139 (SSGC) is a sound source LSI thaL controlled by micro-processor. This LSI incorporaLes three squure·wave generators, one noise generaLor and a envelope genernlor, which enables melody and effect sound generation. The LSI is made by CMOS process , and is p'1tilile wilh Yl121-1~ (SSG).
II FEATUHES
• Low power consumption of CMOS process. • Register patible with YM2149 (SSG) . • Sound source wiLh three square-wave generators and one noise gc ner;itor. • 8-octave wide sound ran ge. • SmooLh feeling sound decay is possible wiLh 5-liiL envelope generator. • BuilL-in 3-channel 5-bit DAC. • CPU parallel interface using 8-bit duta bus. • BuilL·in 2 channel 8-bit I/0 ports enables i11Lerface wiLh external sysLems. • 5V single power supply. • -ID pin plastic DIP or 44 pin plasLic QFP.
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