128 Mbit NOR Flash with Quad-SPI — what the 108 MHz clock buys you
The S25FL127SABBHID00 is a 128 Mbit (16M x 8) NOR Flash memory from Cypress's FL-S series, organized as a single 16M x 8 array and accessed over an SPI Quad I/O interface at up to 108 MHz. That clock rate, combined with the quad data lines, gives a read throughput that keeps an MCU's code-execution or data-logging path from becoming the bottleneck — useful for designs that need fast XIP (eXecute In Place) or OTA staging without a separate DRAM.
Obsolete — plan your last-time buy or alternate now
The official product status for the S25FL127SABBHID00 is Obsolete. That means Cypress (now Infineon) has stopped production, and no further factory orders are accepted.
24-ball BGA (6x8 mm) — rework and layout notes
Packaged in a 24-ball TBGA with a 6x8 mm body (Supplier Device Package 24-BGA (6x8)). The 0.8 mm ball pitch is manageable with standard SMT assembly, but rework requires a hot-air profile that matches the 24-ball array — no center thermal pad, so the primary heat path is through the solder balls.
Temperature grade and typical use cases
Typical applications for a 128 Mbit NOR Flash with Quad-SPI include firmware storage in networking gear (switches, routers), configuration memory in base stations, and code shadowing in industrial controllers where the SPI bus is already populated. The 108 MHz clock is fast enough to support real-time boot from Flash in many Cortex-M and RISC-V designs without a separate SRAM cache.