What this 8 Kbit I²C EEPROM does on your board
The M24C08-WDW6TP is an 8 Kbit serial EEPROM organized as 1 K x 8 bits, communicating over an I²C bus at up to 400 kHz. It stores configuration parameters, calibration constants, or small lookup tables that must survive power loss — the non-volatile memory format holds data for years without a battery. Access time is 900 ns, which is the period from the last clock edge of the address to data appearing on the SDA line. That 900 ns window matters for timing closure on the I²C bus — if your master samples data before the slave releases it, you get corrupted reads. Budget the full 900 ns plus bus rise time into your I²C timing analysis. The wide range also helps in battery-backed designs where the rail droops as the cell ages.
For an existing BOM that already qualifies this part, NRND means you have time to transition; for a new design, pick the active successor instead. The 8-TSSOP package is a common footprint, so a pin-compatible drop-in likely exists. The base product number M24C08 covers multiple package and temperature variants.
Industrial temperature grade and the 8-TSSOP footprint
Write cycle time is 5 ms per word or page. If your application writes many bytes during a calibration sequence, the total write time adds up — a full 1 Kbyte page write takes 5 ms, but a random byte write also takes 5 ms. Plan your I²C bus timeouts accordingly.