The STMicroelectronics M24C02-RDW6T is a 2Kbit serial EEPROM organized as 256 x 8 bits, accessed over an I²C interface at up to 400 kHz. The 900 ns access time is the read-cycle ceiling from the last address clocked in; at 400 kHz the bus itself runs at 2.5 µs per bit, so the access time doesn't limit throughput — the I²C protocol overhead does.
Obsolete — last-time-buy and sourcing reality
Package and temperature grade — board-fit notes
Housed in an 8-TSSOP with 4.40 mm body width, this is a fine-pitch surface-mount package (0.65 mm lead pitch typical for TSSOP-8).