128Mbit SPI NOR Flash in a 24-BGA footprint
The S25FL127SABBHIC00 is a 128Mbit SPI NOR Flash from Infineon's FL-S series, organized as 16M x 8 bits. It uses a Quad I/O SPI interface with a 108 MHz clock, giving a read throughput that suits firmware storage and data logging in embedded systems. Housed in a 24-TBGA package (8x6 mm body), it's a surface-mount part that needs a reflow profile — not something you'd hand-solder on a breadboard.
Supply rail and interface compatibility
The Quad I/O interface means four data lines for faster reads, but the part also works in standard single or dual SPI modes if your controller doesn't support quad. The 108 MHz clock rate is the maximum — actual throughput depends on the SPI controller's speed and the PCB trace length. For a typical Cortex-M running at 100 MHz SPI, you'll saturate the bus before the flash becomes the bottleneck.
No official successor part number is listed in the lifecycle record, so a direct drop-in replacement from Infineon isn't confirmed. A pin-compatible alternative from another vendor would need the same 24-BGA (8x6 mm) layout and Quad I/O SPI interface — something to verify against the original PCB design.