SN56085
4-Channel Speech Controller
1. INTRODUCTION
SN56085 is a 85 seconds single chip 4-channel voice synthesizer IC which 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
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Single power supply 2.4V – 5.5V
Built in a tiny controller
85 seconds voice capacity are provided
128*4 bits RAM are provided
ROM Size
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Maximum 256K*10 bits ROM size
64K program ROM is provided
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Readable ROM code data
I/O Ports
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Four 4-bit I/O ports P1, P2, P3, P6
The driving/sink current of P3.2 & P3.3 are 8mA/16mA
The IO pins P3.3 can be modulated with 38.5Khz carry signal to implement
IR function.
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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
Built in an 8-level volume control Analog Push-Pull Direct Drive circuit.
System clock: 2M Hz (RC-type or Crystal Option)
Low Voltage Reset
Built-in WDT function
Built-in Event Mark Function
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Ver: 1.0
March 2,2005