The HM-6561 is a 256 x 4 static CMOS RAM fabricatedusing self-aligned silicon gate technology. Synchronous circuitdesign techniques are employed to achieve high performanceand low power operation.On-chip latches are provided for address and data outputsallowing efficient interfacing with microprocessor systems.The data output buffers can be forced to a high impedancestate for use in expanded memory arrays. The data inputsand outputs are multiplexed internally for common I/O buscompatibility.The HM-6561 is a fully static RAM and may be maintained inany state for an indefinite period of time. Data retention supplyvoltage and supply current are guaranteed over temperature.
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