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GENERAL DESCRIPTION The MSM6791 can be used as a memory for voice data by connecting OKI solid-state recording and playback ICs (MSM6688 and MSM6788). FEATURES • DRAM (· 1-bit configuration) 1M-bit DRAM (MSM511000A, MSM511001A) : 8 pcs. can be connected. 4M-bit DRAM (MSM514100A, MSM514101A) : 8 pcs. can be connected. 16M-bit DRAM (MSM5116100A) : 2 pcs. can be connected. Note: MSM511002A/MSM514102A that corresponds to a static column mode cannot be used. • Power supply voltage : 5V single rail • Built-in refresh circuit (RAS only refresh) • Original oscillation frequency: 8MHz • Bit rates: 10kbps, 12.5kbps, 16kbps in MSM6788 connection (8kHz sampling fixation) 7.5kbps, 9.4kbps, 12kbps in MSM6788 connection (6kHz sampling fixation) 16kbps~32kbps in MSM6688 connection (4kHz~8kHz sampling) • Package: 44-pin plastic QFP (QFP44-P-910-2K) (Product name : MSM6791GS-2K)
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