MSM6691 Datasheet | OKI Electric

¡ Semiconductor MSM6691 ¡ Semiconductor DRAM Interface IC GENERAL DESCRIPTION DRAMs can be used for voice storage by connecting the MSM6691 with OKI's integrate R/W (Read/Write) ICs, the MSM6388, and the MSM6588. The MSM6691 translates the signals associated with the dedicated serial register interface of the MSM6388 and MSM6588 driver interface when used in a stand-alone mode. Features - DRAM (- 1-bit configuration) - 1-Mbit DRAM (M 51100A, M511001A) : Four units can be used. - 4-Mbit DRAM (M 514100A, M514101A) : Four units can be used. - Power voltage : 5V single - Built-in refresh circuit (RAS only refresh) - Oscillation frequency : 8MHz (during refresh) - Sampling frequency - 4 k Hz to 32 k Hz when MSM6388 is connected. - 4 k Hz to 16 k Hz when MSM6588 is connected. - Package : 44-pin plastic QFP (QFP44-P-910-2K) (Product name : MSM6691GS-2K) ¡ Semiconductor BLOCK DIAGRAM TEST TEST GND VDD Sin P OUT Row Address Counter LD Column or Row Address Multiplexer A10 11 Address Multiplexer 11 A0 to A10 CK SAS TAS XT OSC XT R Column Address Counter Refresh Counter WE RWCK 4M/1M to CS4 Timing and Control XWE DRAM CAS Control CONTROL 4 RAS CAS1 to...