1 Mbit SPI Flash for firmware storage and parameter logging
The SST25VF010A-33-4I-QAE: Non-volatile memory for code shadowing, firmware updates, and calibration-data storage. The 33 MHz clock supports moderate read throughput for booting a microcontroller.
33 MHz SPI bus and write-cycle timing
The SPI interface runs at 33 MHz, which yields a raw serial read rate of about 33 Mbit/s — enough to feed a 32-bit MCU's internal RAM for execute-in-place emulation or to load a boot image quickly. The 20 µs page/word write time (typical) means a 256-byte page program completes in roughly 5 ms, so firmware updates over a UART or CAN link are practical without a large buffer on the host side. The 1 Mbit density holds up to 128 KB of code or data, which fits smaller real-time control firmware or a configuration block with wear-leveling overhead.
Package and board integration
The part comes in an 8-WSON with an exposed pad (supplier package code 8-WSON). The exposed pad carries the thermal return path and should be soldered to a PCB copper land with a via stitch to the ground plane if continuous write cycles are expected in a warm enclosure.