SN66168B

SN66168B 4-Channel Speech Controller 1 INTRODUCTION SN66168B is a 168 seconds single chip 4-channel voice synthesizer IC that contains I/O pins and a tiny controller. By programming through the tiny controller, users’ applications including section combination, trigger modes, output status, high performance melody, multiple voices, and other logic functions can be implemented. 2 FEATURES Single power supply 2.4V – 5.1V Built in a tiny controller 168 seconds voice capacity are provided One 4-bit input port, two 4-bit I/O ports and one 4-bit output port are provided 128*4 bits RAM are provided Maximum 64k program ROM is provided Readable ROM code data www.DataSheet4U.com Built in a high quality speech synthesizer Four independent voice channels Adaptive playing speed from 4k-40kHz is provided for all 4 channels individually Automatic repetition for every channel A 6-bit*8-bit Multiplier is embed to modulate the volume of synthesized voices Two digital mixers (with saturation control) are provided Two 8-bit current output DA converters (Channel 1 + Channel 2 → DA1, Channel 3 + Channel 4 → DA2 ) System clock: 2M Hz ( RC-type or Crystal Option) Low Voltage Reset Ver: 1.1 1 December 6, 2004 SN66168B 4-Channel Speech Controller 3 Block Diagram ROM Program/Speech/Melody/Instrument waveform 512K×12 bits Address Pointers/ STACK SRAM (128 nibbles) Sampling Rate Counter × 4 Timing Generator OSC DA8-bit DA8-bit IO4 IO1 Timer ALU IO2 Voice Synthesizer IO3 4 PIN ASSIGNMENT Sy...