128 Mbit serial NOR flash for code-shadowing and data storage
The S25FL128SAGMFIG13 is a 128 Mbit NOR flash memory from Infineon's FL-S series, organized as 16M x 8 bits. It uses the SPI Quad I/O interface, which allows the memory to read four bits per clock cycle, boosting throughput beyond standard SPI. With a clock frequency of 133 MHz, the Quad I/O read mode delivers a sustained transfer rate that keeps a Cortex-M or RISC-V core fed during execute-in-place (XIP) boot, without stalling on flash wait states.
Housed in a 16-SOIC wide-body package (7.50 mm body width), the footprint matches the JEDEC MO-119 standard for serial NOR flash. The 0.295-inch (7.50 mm) width is the same as many 8-pin SOIC footprints but with the extra pins for Quad I/O and status register signals. The Tape & Reel (TR) packaging option suits automated pick-and-place assembly — the reel quantity is set by the manufacturer and confirmed at order.
The base product number S25FL128 identifies the family — the suffix encodes the package (G = 16-SOIC), temperature range (M = -40 to +85°C), and shipping format (TR = Tape & Reel). Confirm the full order code against the BOM line before committing.