45 ns asynchronous SRAM for legacy 5 V buses
The Infineon CY62128ELL-45SXI is a 1 Mbit asynchronous SRAM organized as 128K x 8 bits, with a 45 ns access time that sets the read-cycle ceiling on the parallel bus. The write cycle time matches the read access at 45 ns, so the bus timing is symmetric — no need to widen the write strobe relative to the read strobe in the controller's memory controller state machine.
MoBL series — standby power and industrial temperature
This SRAM belongs to the MoBL (More Battery Life) series, which emphasizes low standby current for battery-backed or low-duty-cycle applications.
The bulk packaging (not tape-and-reel) suits prototype builds and low-to-medium volume production runs.