64 Mbit NOR Flash with Quad SPI at 108 MHz
The S25FL164K0XMFB010: The Quad SPI mode allows four-bit parallel reads, lifting the effective throughput well above a standard single-bit SPI bus — useful for code shadowing or firmware storage in automotive ECUs where fast boot is required. The 105 °C ceiling covers under-hood and cabin automotive environments where the ambient temperature inside the ECU housing can exceed 85 °C on a hot day.
Automotive AEC-Q100 qualification
This device belongs to the Automotive, AEC-Q100, FL1-K series. That certification is the baseline for any ECU or module that must survive the vehicle's thermal and electrical environment.
Write-cycle timing for firmware updates
The page write cycle time is 3 ms typical. For a 64 Mbit device, a full-chip firmware update over the Quad SPI bus will take on the order of seconds — budget this into the field-update window, especially if the ECU must remain responsive during the erase/write cycle.