166 MHz synchronous SRAM for wide-word buffers
The Infineon CY7C1360C-166AXC is a 9 Mbit synchronous SRAM organized as 256K x 36 bits, clocked at 166 MHz with a 3.5 ns access time. The 36-bit word width is a natural fit for 32-bit data paths that carry parity or ECC, common in network switch buffers, baseband processing, and high-end test equipment.
166 MHz clock and 3.5 ns access — timing budget for the memory controller
At 166 MHz the clock period is about 6 ns. With a 3.5 ns access time the part leaves roughly 2.5 ns for the controller's setup and board trace delay in a zero-wait-state read. That margin is tight but workable with a well-laid-out PCB and a controller that supports programmable read latency. The synchronous SDR (single data rate) architecture means one data transfer per clock edge, so peak bandwidth is 166 MT/s across the 36-bit bus — about 747 MB/s. For a 32-bit system with byte parity, the extra four bits are available for error detection without sacrificing data width.
100-LQFP footprint and supply decoupling
At 166 MHz the part draws transient current on each clock edge; place a 0.1 µF ceramic cap within 2 mm of each VDDQ/VDD pin group, and a 10 µF bulk cap near the package.
Infineon lists the CY7C1360C-166AXC as Active. The base product number CY7C1360 covers a range of speed and package variants; the -166AXC suffix selects the 166 MHz speed grade in the 100-LQFP commercial-temperature option. For dual-source planning, the synchronous SRAM market has several pin-compatible alternatives from other vendors at the same density and speed — verify the exact timing parameters and register configuration before substituting.