256 Mbit NOR Flash with a 133 MHz Quad I/O bus
The S25FL256SAGMFVG00 is a 256 Mbit NOR Flash from Cypress (now part of Infineon) in the FL-S series. The memory is organized as 32 M x 8 bits, and it runs on a 2.7 V to 3.6 V supply rail. Typical deployment is in industrial control, networking gear, or any embedded system that needs non-volatile storage with fast random access and a small footprint.
Package and rework — 16-SOIC wide body
That's the wide-body SOIC, not the narrow version — make sure your footprint matches.
No last-time-buy notice or obsolescence risk on the record.