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NM27C240 Datasheet

  • NM27C240

  • 4,194,304-Bit (256k x 16) High Performance CMOS EPROM

  • 10頁(yè)

  • FAIRCHILD

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NM27C240 4,194,304-Bit (256k x 16) High Performance CMOS EPROM
July 1998
NM27C240
4,194,304-Bit (256k x 16) High Performance
CMOS EPROM
General Description
The NM27C240 is a high performance Electrically Programmable
UV erasable ROM (EPROM). It contains 4,194,304 bits config-
ured as 256k x 16 bits. It is offered in both erasable versions for
prototyping and early production applications as well as non-
erasable, plastic packaged versions that are ideal for high volume
and automated assembly applications.
The NM27C240 operates from a single 5V
鹵10%
supply in the
read mode.
The NM27C240 is offered in both DIP and surface mount pack-
ages. The DIP package is a 40-pin dual-in-line ceramic with a
quartz window to allow erasing. The surface mount package is a
44-pin PLCC that is offered in OTP.
This EPROM is manufactured using Fairchild鈥檚 proprietary AMG鈩?/div>
EPROM technology for an excellent combination of speed and
economy while providing excellent reliability.
Features
s
High performance CMOS
鈥?100 ns access time
s
Fast turn-off for microprocessor compatibility
s
Simplified upgrade path
鈥?V
PP
and PGM are 鈥淒on鈥檛 Care鈥?during normal read
operation
s
Compatible with 27240 and 27C240 EPROMs
s
JEDEC standard pin configuration
鈥?40-pin DIP package
鈥?44-pin PLCC package
s
Manufacturer鈥檚 identification code
s
Fast programming algorithm
Block Diagram
Vcc
GND
Vpp
OE
CE/PGM
Output Enable
Chip Enable, and
Program Logic
Data Outputs O0 - O15
Output
Buffers
Y
Decoder
A0 - A17
Address
Inputs
4,194,304-Bit
Cell Matrix
X
Decoder
DS011949-1
AMG鈩?is a trademark of WSI, Inc.
漏 1998 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com

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