This part is a kind of semiconductor called ACT-F512K8N-150P4M.

Function of this product has ACT-F512K8 High Speed 4 Megabit Monolithic FLASH.

Manufacturers : Aeroflex Circuit Technology

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Some of the text within the PDF file :

ACT–F512K8 High Speed 4 Megabit Monolithic FLASH CIRCUIT TECHNOLOGY Features s s s s s s s s s s s www.aeroflex.com s s Low Power Monolithic 512K x 8 FLASH TTL Compatible Inputs and CMOS Outputs Access Times of 60, 70, 90, 120 and 150ns +5V Programing, 5V ±10% Supply 100,000 Erase / Program Cycles Low Standby Current Page Program Operation and Internal Program Control Time Supports Full Chip Erase Embedded Erase and Program Algorithms Supports Full Chip Erase MIL-PRF-38534 Compliant Circuits Available Industry Standard Pinouts Packaging – Hermetic Ceramic 32 Lead, 1.6" x .6" x .20" Dual-in-line Package (DIP), Aeroflex code# "P4" q 32 Lead, .82" x .41" x .11" Ceramic Flat Package (FP), Aeroflex code# "F6" q 32 Lead, .82" x .41" x .132" Ceramic Flat Package (FP Lead Formed), Aerofle [ ... ]

ACT-F512K8N-150P4M PDF Datasheet Download