A 1Mbit synchronous dual-port SRAM that has reached end-of-life
The Infineon (formerly Cypress) CY7C09289V-9AXC is a 1Mbit synchronous dual-port SRAM organized as 64K words by 16 bits. It provides two independent ports with separate address, data, and control lines, allowing simultaneous read/write access from two bus masters without dead cycles.
Obsolete — what this means for your BOM
This part carries an official obsolete product status.
9 ns access time and 67 MHz clock — the bus timing budget
In a synchronous dual-port design, this sets the margin for the arbitration logic and the setup/hold window at the receiving master. At a 67 MHz clock (approximately 14.9 ns period), the 9 ns access leaves roughly 5.9 ns for clock-to-output delay and signal flight time — tight enough that trace length matching and proper termination on the parallel bus matter.
Parallel interface and 100-TQFP footprint
The memory interface is parallel — 16 data lines plus address and control per port. The tray shipping medium means the parts are delivered in anti-static trays, not tape-and-reel; this is the factory-original packaging for this package size and is typical for engineering samples and low-volume production. Surface-mount assembly requires standard reflow profiling for a 100-lead QFP.