The Microchip SST25VF010A-33-4I-SAE-T is a 1 Mbit SPI serial Flash memory from the SST25 family, organized as 128K x 8. This is a non-volatile memory intended for firmware storage, configuration data, and parameter logging in embedded systems that need a small-footprint, low-pin-count serial Flash.
33 MHz SPI clock — read throughput and boot time
The 33 MHz SPI clock rate gives a raw serial read throughput of about 33 Mbps (assuming single-bit SPI). The write cycle time per page is 20 µs.
Lifecycle and compliance
Microchip lists the SST25VF010A-33-4I-SAE-T as Active in production. It is RoHS3 compliant (lead-free). For a production BOM, this part carries no imminent obsolescence risk. If you need a second-source option, the SST25VF020A is a 2 Mbit density variant in the same package and interface — verify pin compatibility for a drop-in upgrade.