MS87V1021 ic equivalent, recording and playback ic.
as Normal Recording and Playback, Delayed playback, Retroactive playback, Fast forwarding, and Rewinding. The internal memory in which voice data is stored allows a recor.
The MS87V1021 is a single chip recording and playback IC that is controlled by the microcontroller in serial mode, compresses voice with the 4-bit OKI ADPCM algorithm or 4-bit OKI ADPCM2 algorithm with high tone quality, and has 2-Mbit DRAM in which .
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