YM3439

YM3439 (SSGC) is a kind of sound source LSI that controlled by microprocessor.There are some features of YM3439 as follows.First is low power consumption of CMOS process.The second is register compatible with YM2149 (SSG).Then is sound source with three square-wave generators and one noise generator.Next is 8-octave sound range.besides, smooth feeling sound decay is possible with 5-bit envelope generator.The sixth is built-in 3 channel 5 bit DAC.The seventh is CPU parallel interface using 8 bit data bus.Furthermore, built-in 2 channel 8 bit I/O ports enable interface with external systems.The ninth is 5 V single power supply.The last one is 40 pin plastic DIP or 44 pin plastic QFP.

What comes next is about the absolute maximum ratings of YM3439.The VDD (power supply voltage) is from -0.3 V to +7.0 V.The VI (input voltage) is from -0.5 to Vdd+0.5 V.The Top (operating ambient temperature) is from 0 to +70.The Tstg (storage temperature) is from -50 to +125.Then is about the recommended operating conditions.The minimum VDD (power supply voltage) is 4.75 V,the typicall is 5.0 V and the maximum is 5.25 V.The minimum Top (operating temperature) is 0 and the maximum is 70.

The following is about the DC characteristics (Ta=25,VDD=5±0.25 V) of YM3439.The typical power dissipation is 8.0 mW and the maximum is 10.0 mW at VDD=5.0 V with SEL='H' and fc=2 MHz.The minimum VOH (output high voltage) is 2.5 V and the maximum VOL (output low voltage) is 0.4 V applied to the output terminals except CHA, CHB and CHC.The minimum VIH (input high voltage) is 2.2 V and the maximum VIL (output low voltage) is 0.8 V applied to all input terminals.The minimum ILI (input leakage current) is -10A and the maximum is 10A applied to the terminals DA7 to DA0.The minimum ILO (output leakage current) is -10A and the maximum is 10A applied to the terminals DA7 to DA0 during high impedance.