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FM27C040 4,194,304-Bit (512K x 8) High Performance CMOS EPROM
May 2001
FM27C040
4,194,304-Bit (512K x 8) High Performance
CMOS EPROM
General Description Features
The FM27C040 is a high performance, 4,194,304-bit Electrically I High performance CMOS
Programmable UV Erasable Read Only Memory. It is organized -- 90, 120, 150ns access time*
as 512K words of 8 bits each. Its pin-compatibility with byte-wide I Simplified upgrade path
JEDEC EPROMs enables upgrades through 8 Mbit EPROMs. --VPP is a "Don't Care" during normal read operation
The "Don't Care" feature on VPP during read operations allows
I Manufacturer's identification code
memory expansions from 1M to 8 Mbits with no printed circuit
board changes. I JEDEC standard pin configuration
-- 32-pin PLCC
The FM27C040 provides microprocessor-based systems exten- -- 32-pin CERDIP
sive storage capacity for large portions of operating system and
application software. Its 120ns access time provides high speed
operation with high-performance CPUs. The FM27C040 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.
The FM27C040 is manufactured using Fairchild's advanced CMOS
AMGTM EPROM technology.
Block Diagram
Data Outputs O0 - O7
VCC
GND
VPP
OE Output Enable,
Chip Enable, and
CE/PGM Output
Program Logic
Buffers
Y Decoder
..
Y Gating
A0 - A18
Address
Inputs
.......
4,194,304-Bit
Cell Matrix
X Decoder
AMGTM is a trademark of WSI, Inc.