128 Mbit NOR Flash with Quad SPI for code-shadowing and data-logging
It uses a standard SPI interface with Quad I/O and QPI support.
66 MHz clock and Quad I/O — bus throughput for fast boot
The 66 MHz clock rate combined with Quad I/O mode yields an effective data rate on the SPI bus. That is enough to feed a Cortex-M or low-end Cortex-A core from external Flash without stalling the instruction fetch during boot.
Lifecycle and sourcing — EOL hot, plan the last-time-buy
The S25FL128LDPMFV001 carries an EOL hot lifecycle stage, meaning the manufacturer has announced end-of-life. Procurement teams should secure final quantities and evaluate a replacement before the LTB closes. No official successor is listed in the evidence, so a pin-compatible alternative from the same FL-L family or a cross from a second source must be qualified independently.
Industrial temperature range — where it fits
The non-volatile NOR technology retains data through power loss, making it suitable for firmware storage in safety-critical systems where boot reliability matters.