4 Mbit NOR flash with SPI at 85 MHz
The S25FL204K0TMFI041 is a 4 Mbit NOR flash organized as 512K × 8 bits, accessed through a standard SPI serial interface at a clock frequency up to 85 MHz. The 5 ms write cycle time per word/page sets the floor for firmware update throughput — a full 4 Mbit erase and reprogram cycle takes several hundred milliseconds at the page level.
8-SOIC package — board-fit note
No MSL floor-life concern for this package class; typical bake-out is not required unless the tube seal is compromised.