The Radio Shack SP0256 Speech Processor manual provides specifications, pin functions, and usage instructions for speech synthesis.
This manual describes the SP0256 speech processor, a single‑chip N‑channel MOS LSI device that synthesizes speech or complex sounds. It outlines the chip’s four basic functions, the built‑in 16 KB ROM, the programmable digital filter, and the pulse‑width‑modulated output stage.
The document includes detailed pin configurations, electrical characteristics, allophone synthesis methodology, linguistic notes, and tables of allophone addresses. It also shows how to interface the processor to a microcomputer and provides example applications and timing diagrams.
| Supply Voltage (VDD) | 4.6 V |
|---|---|
| Supply Current | 100 µA |
| Clock Frequency | 3.120 MHz |
| Operating Temperature | −40 °C to +70 °C |
| Output Frequency Range | 0 kHz to 5 kHz |
| Dynamic Range | 42 dB |
| Signal‑to‑Noise Ratio | ≈ 35 dB |