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BUY AT27C512R-70PU https://www.utsource.net/itm/p/4144108.html
The Microchip AT27C512R is a low-power, high-performance 512-Kbit One Time Programmable EPROM organized as 64-Kbit x 8. Requiring a single 5V power supply, in normal read mode operation typical power consumption is only 8 mA in active mode and less than 10 ?A in standby mode. Any byte can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems.
Description: AT27C512R-70PU is a 512Kb CMOS EPROM (Electrically Programmable Read-Only Memory) with a 70 ns access time. It is a 28-pin, dual-in-line package (DIP). Features: 512Kb of memory 70 ns access time Low power CMOS technology Single 5V ± 10% power supply Low standby power High speed programming Low cost Fully static operation Pin compatible with 27C512 Applications: Automotive Industrial Medical Telecommunications Consumer electronics Military/Aerospace (For reference only)