NM27C020 2,097,152-Bit (256K x 8) UV Erasable CMOS EPROM
July 1998
NM27C020
2,097,152-Bit (256K x 8) UV Erasable CMOS EPROM
General Description
The NM27C020 is a high speed 2 Megabit CMOS UV-EPROM
manufactured on Fairchild鈥檚 advanced sub-micron technology.
Utilizing the AMG architecture, this advanced CMOS process
delivers high speeds while consuming low power.
The NM27C020 provides microprocessor-based systems exten-
sive storage capacity for large portions of operating systems and
application software. Its 100ns access time provides no-wait-state
operation with high-performance CPUs.
The NM27C020 offers a single chip solution for the code storage
requirements of 100% firmware-based equipment. Frequently-
used software routines are quickly executed from EPROM stor-
age, greatly enhancing system utility.
The NM27C020 is manufactured using Fairchild鈥檚 advanced
CMOS AMG EPROM technology, and is one member of a high
density Fairchild EPROM series family which range in densities up
to 4Mb.
Features
s
High performance CMOS
鈥?100 ns access time
s
Simplified upgrade path
鈥擵
PP
and PGM are 鈥淒on鈥檛 Care鈥?during normal read
operation
s
Manufacturers identification code
s
JEDEC Standard Pin Configuration
鈥?32-pin CERDIP package
鈥?32-pin PLCC package
鈥?32-pin PDIP package
Block Diagram
VCC
GND
VPP
OE
PGM
CE
Output Enable,
Chip Enable, and
Program Logic
Data Outputs O0 - O7
Output
Buffers
Y Decoder
..
2,097,152-Bit
Cell Matrix
A0 - A17
Address
Inputs
.......
X Decoder
DS010835-1
漏 1998 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com