256 Mbit NOR Flash for automotive firmware and calibration storage
It stores firmware, calibration maps, and event logs in engine control units, transmission controllers, and advanced driver-assistance systems where non-volatile code storage must survive power loss and field updates. Organized as 32 M x 8 bits, the part communicates over a Quad SPI (SPI - Quad I/O) interface with QPI support, achieving a 133 MHz clock rate. That translates to a sustained read throughput that can boot a modern MCU in under a second and handle over-the-air firmware updates without stalling the application processor.
The S25FL256LAGBHB023 carries an EOL-hot lifecycle stage, meaning the manufacturer has issued an end-of-life notice and the part is in its last-time-buy window. Procurement teams should secure final orders and plan for a pin-compatible replacement or a second-source qualification before the buy window closes.