The NY4B series IC is a powerful 4-bit micro-controller based sound processor. There is only 1-channel speech with high quality direct-drive PWM output. By using the high fidelity ADPCM speech synthesis algorithm and a built-in noise filter, it can produce outstanding quality voices. Wide range sampling rate up to 44.1kHz is supported. TAC80Fhe RISC MCU architecture is very easy to program and control, various applications can be easily implemented. There are 44 instructions, and most of them are executed in single cycle. Through +/-1% accurate internal oscillation, external Rosc is unnecessary. Furthermore, a HALT mode (sleep mode) is designed to minimize power dissipation.
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