NM27C020 Datasheet, PDF (1/14 Pages) Fairchild Semiconductor – 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’s 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’s 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
— 100 ns access time
s Simplified upgrade path
—V_PP and PGM are “Don’t Care” during normal read
operation
s Manufacturers identification code
s JEDEC Standard Pin Configuration
— 32-pin CERDIP package
— 32-pin PLCC package
— 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
A0 - A17
Address
Inputs
X Decoder
2,097,152-Bit
Cell Matrix
© 1998 Fairchild Semiconductor Corporation
1
DS010835-1
www.fairchildsemi.com