512 Mbit NOR Flash for automotive and industrial code storage
The Infineon S25FL512SAGMFMG10 is a 512 Mbit NOR Flash memory from the Automotive FL-S series, organized as 64M x 8 and accessed over a SPI Quad I/O interface at up to 133 MHz. It operates from a 2.7 V to 3.6 V supply and is qualified to AEC-Q100, making it suitable for automotive under-hood environments, engine control units, and advanced driver-assistance systems where code shadowing or data logging demands non-volatile storage with fast random access. The 16-SOIC package (7.50 mm width) fits standard surface-mount assembly flows.
133 MHz Quad SPI — throughput for fast boot and OTA
At this speed, the memory can saturate a typical 8-bit SPI bus; the controller-side SPI peripheral must support Quad mode to realize the full bandwidth. The 512 Mbit density holds roughly 64 MB of code or calibration data — enough for a full-featured automotive ECU image with room for a backup bank.
125°C operating temperature — the under-hood tier
Rated for -40°C to 125°C ambient, this variant sits above the 105°C S25FL512SAGMFBG10 and the 85°C S25FL512SAGMFIR10 and S25FL512SAGMFIG10. The 125°C ceiling is the deciding spec for engine-bay or transmission-control modules where ambient temperatures exceed 105°C. If your BOM targets a cabin or chassis-domain ECU, the 105°C or 85°C siblings may save cost without sacrificing reliability.