Write cycle timing and firmware update budgeting
The MT25QU128ABB8ESF-0AUT: Page write cycle time is 8 ms typical; word write is 2.8 ms typical. For a 128 Mbit firmware image, the total write time at the page level is roughly 1.3 seconds, which sets the minimum window for a reliable over-the-air update without power-loss corruption. The SPI Quad I/O interface reads at 133 MHz, delivering a sustained throughput of 66 MB/s in quad-read mode — enough to support XIP (execute-in-place) boot from flash in most automotive MCU platforms.
Package and board-level integration
Surface-mount assembly with ROHS3-compliant termination — no special reflow profile beyond standard lead-free solder curves.