YMZ284 Datasheet | YAMAHA

ov ERVIEW The YMZ284(SSGL) is a melody and effect sound generator LSI, having square wave, noise and envelope generators . The YMZ284 is packaged in 16-pin DIP with easy control, eliminating the I/O port and improving CPU interface from the YM2 I 49 (SSG). - FEATURES e Three sequence square wave generators and one noise generator, software-patible with the YM2 l 49(SSG) e 3 built-in 5-bit DI A convertors and mixed output e CPU interface through / CS, / WR control signal and 8 bit data bus e Wide voicing range of 8 octaves e Smooth attenuation by wide dynamic range envelope generator e Power down mode e +SY single power supply, silicon gate CMOS process - 16-pin plastic DIP(YMZ284-D) or 16-pin plastic SOP (YMZ284-M). - - - - - - Y A M A H A CORPORATION --:::=:==============::=:::::; YMZ284 CATALOG CATALOG No.: -LSI 4MZ2843 1994. 11 - PIN OUT DIAGRAM /WR 1 /CS 2 AO 3 VDD 4 so 5 GND 6 ¢> M 7 /IC 8 16 DO 15 01 14 02 13 03 12 04 11 05 10 06 9 07 Top View (16pin DIP, 16pin SOP) VMZ284 - PIN DESCRIPTION No Name 1 / WR 2 / CS 3 AO 4 VDD 5 so 6 GND 7 j_M 8 / IC 9 D7 10 D6 11 D5 12 D4 13 03 14 D2 15 Dl 16 DO l/O Function I CPU interface Write enable I CPU Interface Chip se lect I CPU interface Address/Data select - +5V power supply 0 DIA convertor output for SSG - Ground I Master clock input I+ Initial clear input I CPU interface data bus (MSB) I CPU interface data bus I CPU interface data bus I CPU interface data bus I CPU interface data...