FM27C040 4,194,304-Bit (512K x 8) High Performance CMOS EPROM
January 2000
FM27C040
4,194,304-Bit (512K x 8) High Performance
CMOS EPROM
General Description
The FM27C040 is a high performance, 4,194,304-bit Electrically
Programmable UV Erasable Read Only Memory. It is organized
as 512K words of 8 bits each. Its pin-compatibility with byte-wide
JEDEC EPROMs enables upgrades through 8 Mbit EPROMs.
The 鈥淒on鈥檛 Care鈥?feature on V
PP
during read operations allows
memory expansions from 1M to 8 Mbits with no printed circuit
board changes.
The FM27C040 provides microprocessor-based systems exten-
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鈥檚 advanced CMOS
AMG鈩?EPROM technology.
Features
I
High performance CMOS
鈥?120, 150ns access time*
I
Simplified upgrade path
鈥擵
PP
is a 鈥淒on鈥檛 Care鈥?during normal read operation
I
Manufacturer鈥檚 identification code
I
JEDEC standard pin configuration
鈥?32-pin PDIP
鈥?32-pin PLCC
鈥?32-pin CERDIP
*Note:
New revision meets 70ns. Please check with factory for availability.
Block Diagram
VCC
GND
VPP
OE
CE/PGM
Output Enable,
Chip Enable, and
Program Logic
Data Outputs O0 - O7
Output
Buffers
Y Decoder
..
Y Gating
A0 - A18
Address
Inputs
.......
4,194,304-Bit
Cell Matrix
X Decoder
DS800033-1
AMG鈩?is a trademark of WSI, Inc.
漏 1999 Fairchild Semiconductor Corporation
FM27C040 Rev. A
1
www.fairchildsemi.com