, , , , , ,

24C EEPROM, looks like Microchip's standard 350 nm 3-metal process.

IBIS model: “Manufactured on Microchip's 160K process”

Package

8-pin SOIC.

Markings: 

  24LC256I
  SN (e3) 1115
  (Microchip logo) K7U

Die

Size is approximately 1760 x 1830 μm (3.22 mm2)

Mask revision markings. Interestingly, not all in the same spot on the die.

Logo and die ID.