The NM27C512 is a high performance 512K UV Erasable Electrically Programmable Read Only Memory (EPROM). It is manufactured using National’s proprietary 0.8 micron CMOS AMGTM EPROM technology for an excellent combination of speed and economy while providing excellent reliability.
The NM27C512 provides microprocessor-based systems storage capacity for portions of operating system and application software. Its 90 ns access time provides no wait-state operation with high-performance CPUs. The NM27C512 offers a single chip solution for the code storage requirements of 100% firmware-based equipment. Frequently-used software routines are quickly executed from EPROM storage, greatly enhancing system utility.
High performance CMOS
-- 90 ns access time
Fast turn-off for microprocessor compatibility
Manufacturers identification code
JEDEC standard pin configuration
--28-pin DIP package
--32-pin chip carrier