128 Mbit NOR Flash in an 8-SOIC — what the bench sees
The S25FL127SABMFIZ01 is a Cypress FL-S series 128 Mbit NOR Flash memory in an 8-SOIC surface-mount package. This is a non-volatile Flash part — no battery backup needed for firmware or calibration data.
Cypress lists this part as Obsolete.
108 MHz Quad I/O — throughput for code shadowing
The 108 MHz clock rate with Quad I/O gives a sustained read throughput that suits code shadowing from Flash to RAM on boot, or high-speed data logging. The 128 Mbit density (16 MB) holds a substantial firmware image plus a file system partition. If you are replacing a failed part on a board that originally used this exact memory, the 108 MHz speed and 2.7-3.6 V supply are the critical match points — a slower part or one with a different supply rail will not work without rework.