Infineon (Cypress) FL-S series, S25FL128SDPMFIG00, 128Mbit NOR Flash, SPI Quad I/O interface, 66 MHz clock, 2.7V–3.6V supply, -40°C to 85°C, 16-SOIC (7.50mm width).
| Parameter | Value |
|---|---|
| Series | FL-S |
| Memory type | Non-Volatile |
| Mounting | Surface Mount |
| Supply voltage | 2.7V ~ 3.6V |
| Clock frequency | 66 MHz |
| Memory interface | SPI - Quad I/O |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tray |
| Technology | FLASH - NOR |
| Memory size | 128Mbit |
| Memory format | FLASH |
| Case | 16-SOIC (0.295\", 7.50mm Width) |
| Memory organization | 16M x 8 |
The 66 MHz clock frequency, combined with Quad I/O, delivers a sustained read rate around 33 MB/s — enough for code shadowing in embedded systems or storing configuration data in networked devices.
The wide SOIC-16 is larger than the narrow 150-mil SOIC, so a board layout designed for the narrow version will need a pad pattern adjustment — verify the land pattern before committing the PCB.
No official replacement is listed. The FL-S series includes other density and package variants; a pin-compatible alternative within the same family would share the 16-SOIC footprint and Quad SPI interface, but verify the exact memory size and clock speed against your firmware image size.