8 Mbit SPI flash in a standard 8-SOIC footprint
The AT45DB081E-SSHN-B is an 8 Mbit serial flash from Renesas, organized as 264 bytes per page across 4096 pages.
Write timing and page-level granularity
Page program completes in 8 µs typical, while a page erase takes 4 ms. The erase time is the dominant factor for any write-heavy workload — if you are logging data every few seconds, budget the erase latency into the firmware loop or use a circular buffer across multiple pages. The 264-byte page size is slightly larger than a standard 256-byte sector, which means a firmware image built for a 256-byte page flash may need padding or alignment adjustments. Check the memory organization before porting code from a conventional serial flash.
The tube packaging suits manual assembly or low-volume kitting; for reel-fed pick-and-place, the tape-and-reel variant AT45DB081E-SSHN-T shares the same die and pinout.