What this synchronous SRAM does for your bus
The CY7C1351G-100AXCT is a 4.5 Mbit synchronous SDR SRAM organized as 128K x 36 bits — the 36-bit word width lets you carry parity or ECC alongside a 32-bit data path without an extra chip. Clocked at 100 MHz with an 8 ns access time, it delivers one word per clock cycle in burst mode, which keeps the bus moving in cache-line fills or packet buffers.
Clock rate, access time, and timing margin
At 100 MHz the clock period is 10 ns; the 8 ns access time leaves only 2 ns of setup/hold margin for the controller. That means the PCB trace length matching and clock skew budget need to be tight — this part rewards a clean layout with short, equal-length data lines.
Package and hand-solderability
The 100-TQFP (14x20 mm body) has a 0.5 mm pitch — fine enough to need a steady hand and a fine-tip iron or hot-air rework, but still within reach of a well-equipped bench. No hidden balls, no underfill required.
The base product number is CY7C1351, so any future die shrinks or package variants will carry the same base.