very low cost voice and melody synthesizer with 4-bits CPU

General Description The APExx12 series are very low cost voice and melody synthesizer with 4-bits CPU. They have various features including 4-bits ALU, ROM, RAM, I/O ports, timers, clock generator, voice and melody synthesizer, and PWM (Direct drive) or D/A current outputs, etc. The audio synthes

very low cost voice and melody synthesizer with 4-bits CPU

General Description\nThe APExx12 series are very low cost voice and melody synthesizer with 4-bits CPU. They have various features including 4-bits ALU, ROM, RAM, I/O ports, timers, clock generator, voice and melody synthesizer, and PWM (Direct drive) or D/A current outputs, etc. The audio synthesiz \n Single power supply can operate from 2.4V to 5.5V at 4MHz or 8MHz.\n(2) Program ROM: 16k x 10 bits\n(3) 1 set of 16-bits DPR can access up to 64k x 10 bits melody data memory space, and 1 set of 18-bits\n   VPR can access up to 256k x 10 bits voice data memory space.\n(4) Data Registers:\n   a). ;