The STMicroelectronics M24C32-WMN6T is a 32Kbit serial I2C EEPROM organized as 4K x 8 bits, in an 8-pin SOIC package. Typical applications include parameter storage, calibration data, configuration settings, and small firmware patches in industrial controllers, telecom gear, and automotive body electronics.
The 450 ns access time and 1 MHz clock rate are standard for this density class of I2C EEPROM — fast enough for most read operations during boot or runtime parameter recall. The 5 ms write cycle time per word or page means the host firmware must wait or poll for the write-complete acknowledge; plan for that delay in your write routine.
Lifecycle reality — obsolete, but still sourced
If you have an existing BOM line that calls out this exact order code, you can still fill it; just be aware that long-term supply depends on surplus inventory, not fresh wafer starts. For new designs, ST's current-production M24C32 family parts (same footprint, same I2C interface) are the natural drop-in, but verify the exact order code against your firmware and timing requirements.