The Micron MT58L256L18F1T-10 is a 4Mbit synchronous SRAM from the SYNCBURST™ family, organized as 256K x 18 bits. It is a volatile memory with a parallel interface, designed for high-throughput cache and buffer applications where deterministic read/write latency matters — think network switch packet buffers, base station DSP scratchpads, or test equipment waveform capture. The 10 ns access time and 66 MHz clock rate let it sustain back-to-back transactions without dead cycles, which is the whole point of a synchronous pipeline over an asynchronous SRAM.
10 ns access time at 66 MHz allows single-cycle reads without wait states.
The 100-TQFP package is surface-mount. RoHS non-compliant.