NM27C512V90 product image


FAIRCHILD Semiconductor
NSC [National Semiconductor]
The NM27C512(NM27C512V90 ) is a high performance 512K UV Erasable Electrically Programmable Read Only Memory (EPROM). It is manufactured using Fairchild’s proprietary CMOS AMG™ 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% firmwarebased equipment. Frequently-used software routines are quickly executed from EPROM storage, greatly enhancing system utility. The NM27C512 is configured in the standard JEDEC EPROM pinout which provides an easy upgrade path for systems which are currently using standard EPROMs.
NM27C512V90 Features
• High performance CMOS
- 90 ns access time
• Fast turn-off for microprocessor compatibility
• Manufacturers identification code
• JEDEC standard pin configuration
- 28-pin PDIP package
- 32-pin chip carrier
- 28-pin CERDIP package


Memory Size512K (64K x 8)
Voltage - Supply4.5 V ~ 5.5 V
Operating Temperature0°C ~ 70°C
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