8Kbit SPI EEPROM for industrial storage
The Microchip 25AA080B-I/ST is an 8Kbit serial EEPROM with an SPI interface, organized as 1K x 8 bits. It runs at a 10 MHz clock rate and operates from a 1.8V to 5.5V supply, making it a drop-in for 3.3V or 5V logic systems. The 8-TSSOP package (4.40 mm width) suits space-constrained boards where a small footprint matters.
At 3.3V the SPI bus runs at full 10 MHz, which gives a clean read margin for a typical microcontroller SPI peripheral. The 5ms page write cycle is a hard limit for the firmware engineer — any write operation must wait that long before the next command, so the driver needs a polling loop or a timer-based delay.
This part ships in a tube, not tape-and-reel — the procurement desk should note that if the pick-and-place line expects reels, the 25LC080AT-I/SN variant in the same 8-TSSOP footprint might be a better logistics fit. The 8-TSSOP body is 4.40 mm wide, a fine-pitch SOIC derivative. For the rework tech: MSL is not stated here, but a standard 8-TSSOP is typically MSL 1; still, a 24-hour bake at 125°C before reflow is cheap insurance if the moisture-barrier bag has been punctured.
That said, the RoHS compliance is listed as non-compliant — a flag for any BOM that requires full RoHS exemption documentation. If your compliance team needs a RoHS-compliant alternate in the same 8-TSSOP footprint, the 25LC080 series (e.g. 25LC080AT-I/SN) is a functional match with a 2.5V minimum supply.