8Kbit I²C EEPROM for general-purpose non-volatile storage
The M24C08-RMN6TP is an 8Kbit serial EEPROM from STMicroelectronics, organized as 1K x 8 bits and accessed over an I²C bus at up to 400 kHz. It operates from a single 1.8 V to 5.5 V supply, making it compatible with both 3.3 V and 5 V logic systems without a level translator on the I²C lines. The 900 ns access time is the read-cycle ceiling from the array to the output latch — the I²C bus rate, not this figure, sets the actual throughput in a sequential read.
Package, temperature range, and where it fits
Housed in an 8-pin SOIC (3.90 mm width) — the standard narrow-body footprint that matches many existing PCB layouts for 8-pin serial EEPROMs. Rated for -40°C to +85°C ambient, so it suits industrial control, HVAC, and outdoor telecom equipment that sees temperature swings outside the commercial 0–70°C band. Surface-mount assembly with Tape & Reel or Cut Tape options — the reel is the volume-pick for pick-and-place; Cut Tape works for prototypes or small-batch rework.
Write endurance and page-mode timing
The write cycle time is 5 ms for a word or page write — budget this into the firmware update routine; a full 8Kbit rewrite at 16 bytes per page takes roughly 40 ms plus I²C addressing overhead. Non-volatile storage with no battery backup needed — data retention is specified by ST for this EEPROM process, so the calibration constants or configuration byte survive a power loss.
Lifecycle and compliance
RoHS3 compliant (2011/65/EU + 2015/863), with no exemptions listed — it ships lead-free and meets the current EU restriction levels for hazardous substances.