256 Kbit NVSRAM — no battery, no backup worries
The Cypress CY14B256LA-ZS45XI is a 256 Kbit non-volatile SRAM organised as 32K x 8 bits, with a 45 ns access time. Unlike battery-backed SRAMs, this part stores data in integrated non-volatile cells — no battery, no replacement schedule, no disposal compliance. It is a drop-in parallel SRAM footprint that retains the contents when power drops, making it a fit for industrial controllers, metering, and RAID cache buffers where configuration or log data must survive a power cycle without a coin cell.
For a BOM line that depends on this NVSRAM for non-volatile storage, the supply chain risk is low — no forced redesign around a discontinued part. The part is RoHS compliant, so it passes the standard environmental requirements for new builds.