4-Channel Speech Controller
SN66021
4-Channel Speech Controller
INTRODUCTION
SN66020 is a 20 seconds single chip 4-channel voice synthesizer IC w...
Description
SN66021
4-Channel Speech Controller
INTRODUCTION
SN66020 is a 20 seconds single chip 4-channel 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, high performance melody, multiple voices, and other logic functions can be implemented.
FEATURES
Single power supply 2.4V – 5.1V Built in a tiny controller 20 seconds voice capacity are provided One 4-bit input port, two 4-bit I/O ports and one 4-bit output port are provided 256*4 bits RAM are provided Maximum 64k program ROM is provided Readable ROM code data 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 ( R-type or Crystal Option) Low Voltage Reset
1
March 8, 2001
SN66021
4-Channel Speech Controller
PIN ASSIGNMENT
Symbol P10 P11 P12 P13 P20 P21 P22 P23 P30 P31 P32 P33 P40 P41 P42 P43 VDD GND OSC/XIN XOUT CKSEL I/O Function Description I I I I Bit0 of input port 1 Bit1 of input port 1 Bit2 of input port 1 Bit3 of input port 1
I/O Bit0 of I/O port 2 I/...
Similar Datasheet