SN68090

SN68090 Speech Controller „ INTRODUCTION SN68090 is a 90 seconds single chip voice synthesizer IC which contains I/O pins and a tiny controller. By programming through the tiny controller, user’s applications including section combination, trigger modes, output status, and other logic functions can then be easily implemented. „ FEATURES Š Š Š Š Š Š Š Š Š Š Š Š Š Single power supply 2.4V - 5.1V Built in a tiny controller 90 seconds voice capacity are provided Two 4-bit I/O ports and two 4-bit output ports are provided 64*4 bits RAM are provided Maximum 16k program ROM is provided Readable ROM code data Built in a high quality speech synthesizer Adaptive playing speed from 2.5k-20kHz is provided Built in a dual tone melody generator Speech/Dual tone melody mixer is provided Fixed current D/A output is provided to drive external connected transistor for sound output Low Voltage Reset 1 December 20, 2000 SN68090 Speech Controller „ PIN ASSIGNMENT Symbol P20 P21 P22 P23 P30 P31 P32 P33 P40 P41 P42 P43 P50 P51 P52 P53 VDD OSC TEST RESET GND VO I/O I/O I/O I/O I/O I/O I/O I/O I/O O O O O O O O O I I I I I O Function Description Bit0 of I/O port 2 Bit1 of I/O port 2 Bit2 of I/O port 2 Bit3 of I/O port 2 Bit0 of I/O port 3 Bit1 of I/O port 3 Bit2 of I/O port 3 Bit3 of I/O port 3 Bit0 of output port 4 Bit1 of output port 4 Bit2 of output port 4 Bit3 of output port 4 Bit0 of output port 5 Bit1 of output port 5 Bit2 of output port 5 Bit3 of output port 5 Positive power supply Oscil...