4 Kbit I²C EEPROM — what this part does
The STMicroelectronics M24C04-RDW6TP is a 4 Kbit serial EEPROM with an I²C interface, organized as 512 x 8 bits. It stores configuration parameters, calibration data, or small firmware patches that must survive power loss. The non-volatile memory (EEPROM technology) holds data for years without a battery. The I²C bus runs at 400 kHz (standard-mode), with a 900 ns access time for random reads. Write-cycle time is 5 ms per word or page — enough for infrequent parameter updates but not for streaming writes.
Package and temperature — board-fit details
Housed in an 8-TSSOP package (body 4.40 mm wide, 0.65 mm pitch), surface-mount only. The small footprint saves board space but demands a steady hand on the hot-air pencil or reflow oven. The tape-and-reel (TR) and cut-tape (CT) packaging options suit both high-volume pick-and-place and prototype runs. ROHS3 compliant, no lead or restricted substances in the finish.