The Cypress CY7C0852V-133AXCT is a 4.5 Mbit synchronous dual-port SRAM organized as 128K x 36 bits, clocked at 133 MHz with a 4.4 ns access time. It operates from a 3.135 V to 3.465 V supply and is rated for 0°C to 70°C commercial environments.
The 133 MHz clock rate and 4.4 ns access time let both ports sustain back-to-back reads or writes without wait states, provided the arbiter logic respects the semaphore flags. For a packet buffer or a dual-ported register file, this means the CPU and the DMA engine can each hit the memory at full speed without stalling the other side.