9 Mbit synchronous SRAM in a 100-TQFP — the board-fit and speed-grade decision
The CY7C1360C-166AXI 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 maps directly to a data bus with parity or ECC coverage — the extra four bits per word are available for error detection without doubling the memory depth.
Active lifecycle and compliance — no EOL watch needed
It is ROHS3 compliant, so there are no RoHS exemption expiry dates to track for long-life designs.
36-bit bus width vs 18-bit sibling — the organization choice
The closest peer at the same speed and temperature grade is the CY7C1356C-166AXI, also 9 Mbit and 166 MHz with 3.5 ns access, but organized as 512K x 18 bits. The CY7C1360C-166AXI gives you a 36-bit word in a single chip — useful when the bus width matches the processor's external memory interface without needing two 18-bit parts. The 18-bit sibling halves the pin count on the data bus, which may simplify routing on a 2-layer board, but the 36-bit part saves board space and reduces the load on the address lines.