The Cypress CY7C09569V-100AC is a 576 Kbit dual-port synchronous SRAM organized as 16K words of 36 bits each. It is designed for systems that need two independent ports with full simultaneous read/write access to the same memory array — common in multi-processor shared memory, baseband packet buffers, and video frame stores where one port handles the data path and the other the control processor. The 5 ns access time and 100 MHz clock frequency set the timing budget. The 36-bit word width is wider than the common 8/16/32-bit SRAMs; it directly connects to a 36-bit DSP or a 32-bit CPU with parity bits, saving external muxing. The 16K depth is moderate — enough for a 64 KB L2 cache tag or a 72 KB packet buffer in a 10/100 Ethernet design. That confines it to indoor, conditioned environments — server rooms, lab equipment, office networking gear. No industrial or automotive use without qualification data.
The CY7C09569V-100AC carries an official lifecycle status of Obsolete. Cypress (now Infineon) has discontinued production; there is no last-time-buy window open. The only available units are new-old-stock or surplus inventory held by independent distributors. Because this part is obsolete, a buyer filling a BOM line for a legacy board should verify date code freshness and request a counterfeit-inspection certificate from the supplier.