64 Mbit NOR Flash with quad-I/O throughput
The S25FL064LABNFM041: It interfaces over SPI with Quad I/O and QPI support, clocking at 108 MHz for read operations — this quad-lane mode delivers four bits per clock cycle, so the effective throughput reaches 54 MB/s on a 108 MHz quad read, enough for execute-in-place firmware and fast boot sequences in embedded systems.
Package footprint and board integration
Housed in an 8-UDFN exposed pad package (supplier device package 8-USON, 4x4 mm), the S25FL064LABNFM041 mounts on the PCB with a surface-mount footprint. The exposed pad under the package conducts heat to the board copper — for sustained quad-I/O reads at 108 MHz, the thermal path through the pad keeps the die temperature within the -40 to 125 °C operating window. The 4x4 mm USON body is compact enough for space-constrained designs like sensor modules or handheld instruments.