256K x 36 synchronous SRAM — what the organization means for your bus
The CY7C1361B-100BGC is a 9Mbit synchronous SRAM organized as 256K words by 36 bits. The 36-bit word width matches a 32-bit data bus plus 4 parity or ECC bits — common in networking and telecom line-card buffers where the extra bits carry sideband or error-correction data without an external latch cycle. At a 100 MHz clock with an 8.5 ns access time, the part delivers one word per clock in burst mode — the pipelined synchronous interface hides the column-access latency behind the register stage.
119-PBGA footprint — board-fit constraints
Housed in a 119-ball PBGA measuring 14x22 mm, the package requires a 4+ layer PCB with buried vias for signal fan-out — the 0.80 mm ball pitch forces at least two signal layers to escape all 36 data lines plus address and control.