This part is a kind of semiconductor called 27C1024.

Function of this product has 1 Megabit (65 K x 16-Bit) CMOS EPROM.

Manufacturers : Advanced Micro Devices

Image and pinout :

Some of the text within the PDF file :

FINAL Am27C1024 1 Megabit (65 K x 16-Bit) CMOS EPROM DISTINCTIVE CHARACTERISTICS s Fast access time Speed options as fast as 55 ns s Low power consumption 20 µA typical CMOS standby current s JEDEC-approved pinout 40-Pin DIP/PDIP 44-Pin PLCC s Single +5 V power supply s ±10% power supply tolerance standard s 100% Flashrite™ programming Typical programming time of 8 seconds s Latch-up protected to 100 mA from –1 V to VCC + 1 V s High noise immunity s Versatile features for simple interfacing Both CMOS and TTL input/output compatibility Two line control functions GENERAL DESCRIPTION The Am27C1024 is a 1 Megabit, ultraviolet erasable programmable read-only memory. It is organized as 64 Kwords by 16 bits per word, operates from a single +5 V supply, has a st [ ... ]

27C1024 PDF Datasheet Download