NM27C128 Datasheet, PDF (1/11 Pages) Fairchild Semiconductor – 131,072-Bit (16K x 8) High Performance CMOS EPROM

July 1998
NM27C128
131,072-Bit (16K x 8) High Performance CMOS EPROM
General Description
The NM27C128 is a high performance 128K UV Erasable Electri-
cally Programmable Read Only Memory. It is manufactured with
Fairchild’s latest CMOS split gate EPROM technology which
enables it to operate at speeds as fast as 90 ns access time over
the full operating range.
The NM27C128 provides microprocessor-based systems exten-
sive storage capacity for large portions of operating system and
application software. Its 90 ns access time provides high speed
operation with high-performance CPUs. The NM27C128 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 NM27C128 is configured in the standard EPROM pinout
which provides an easy upgrade path for systems which are
currently using standard EPROMs.
The NM27C128 is one member of a high density EPROM Family
which range in densities up to 4 Mb.
Features
s High performance CMOS
— 90 ns access time
s Fast turn-off for microprocessor compatibility
s JEDEC standard pin configuration
— 28-pin PDIP package
— 32-pin chip carrier
— 28-pin CERDIP package
s Drop-in replacement for 27C128 or 27128
s 40% faster programming time with Fairchild’s turbo algorithm
Block Diagram
VCC
GND
VPP
Data Outputs O0 - O7
OE
PGM
CE
Output Enable,
and Chip
Enable Logic
Output
Buffers
A0 - A14
Address
Inputs
Y Decoder
X Decoder
Y Gating
131,072-Bit
Cell Matrix
© 1998 Fairchild Semiconductor Corporation
1
DS011329-1
www.fairchildsemi.com