512 Mbit NOR flash with quad-I/O read at 133 MHz
The Infineon S25FL512SAGMFI011 is a 512 Mbit SPI NOR flash from the FL-S series, organized as 64M x 8 bits. It supports SPI and Quad I/O interfaces at a clock frequency of 133 MHz, which determines the firmware read throughput and boot time from this memory.
The 16-SOIC footprint is a standard JEDEC outline — the PCB land pattern and reflow profile follow the package drawing for this 1.27 mm pitch SOIC. No exposed pad — the thermal path is through the package leads into the board copper.