For existing BOM lines, procurement must go through independent distribution or surplus channels.
12 ns access time — bus timing margin for fast processors
The 12 ns access time is the headline rating for this 256Kbit asynchronous SRAM. It defines how quickly data appears on the output after the address is presented. For a processor running at 50 MHz or faster, a 12 ns SRAM typically allows zero-wait-state reads when the bus timing budget is tight. This part is organized as 32K x 8, which suits 8-bit microcontroller buses or as a fast scratchpad for DSPs.
28-TSSOP footprint — verify PCB layout
Packaged in a 28-TSSOP with a body width of 0.465" (11.80 mm). If replacing a different SRAM in the same density, confirm the pinout and footprint match — Cypress used multiple 28-pin SRAM packages (TSOP I, TSOP II, SOIC) with different pin arrangements.