NM27C512N FAIRCHILD [Fairchild Semiconductor], NM27C512N Datasheet

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NM27C512N

Manufacturer Part Number
NM27C512N
Description
524,288-Bit (64K x 8) High Performance CMOS EPROM
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet

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© 1998 Fairchild Semiconductor Corporation
NM27C512
524,288-Bit (64K x 8) High Performance CMOS EPROM
General Description
The NM27C512 is a high performance 512K UV Erasable Electri-
cally Programmable Read Only Memory (EPROM). It is manufac-
tured using Fairchild’s proprietary CMOS AMG™ EPROM tech-
nology for an excellent combination of speed and economy while
providing excellent reliability.
The NM27C512 provides microprocessor-based systems storage
capacity for portions of operating system and application soft-
ware. Its 90 ns access time provides no wait-state operation with
high-performance CPUs. The NM27C512 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 NM27C512 is configured in the standard JEDEC EPROM
pinout which provides an easy upgrade path for systems which are
currently using standard EPROMs.
Block Diagram
AMG is a trademark of WSI, Inc.
A 0 - A 15
CE/PGM
Address
Inputs
GND
V CC
V PP
OE
Output Enable and
Chip Enable Logic
X Decoder
Y Decoder
1
The NM27C512 is one member of a high density EPROM Family
which range in densities up to 4 Megabit.
Features
High performance CMOS
— 90 ns access time
Fast turn-off for microprocessor compatibility
Manufacturers identification code
JEDEC standard pin configuration
— 28-pin PDIP package
— 32-pin chip carrier
— 28-pin CERDIP package
Data Outputs O 0 - O 7
524,288-Bit
Cell Matrix
Buffers
Output
www.fairchildsemi.com
July 1998
DS010834-1

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NM27C512N Summary of contents

Page 1

... High Performance CMOS EPROM General Description The NM27C512 is a high performance 512K UV Erasable Electri- cally Programmable Read Only Memory (EPROM manufac- tured using Fairchild’s proprietary CMOS AMG™ EPROM tech- nology for an excellent combination of speed and economy while providing excellent reliability ...

Page 2

Connection Diagrams 27C080 27C040 27C020 27C010 27C256 XX/ XX/ XX ...

Page 3

Absolute Maximum Ratings Storage Temperature All Input Voltages Except A9 with Respect to Ground V and A9 with Respect to Ground PP V Supply Voltage with CC Respect to Ground Read Operation DC Electrical Characteristics Symbol Parameter V Input Low ...

Page 4

Capacitance MHz (Note 2) A Symbol Parameter C Input Capacitance IN1 except OE Output Capacitance OUT C OE/V Input IN2 PP Capacitance AC Test Conditions Output Load 1 TTL Gate and ...

Page 5

Programming Characteristics Symbol Parameter t Address Setup Time Setup Time OES t Data Setup Time Setup Time VCS CC t Address Hold Time AH t Data Hold Time DH t Chip Enable to Output ...

Page 6

Turbo Programming Algorithm Flow Chart DEVICE YES FAILED INCREMENT ADDRESS Note: The standard National Semiconductor algorithm may also be used but it will take longer programming time 6. 12.75V ADDRESS = ...

Page 7

... The EPROM is programmed with the Turbo Programming Algo- rithm shown in Figure 1. Each Address is programmed with a series pulses until it verifies good maximum of 10 pulses. Most memory cells will program with a single 50 s pulse. (The standard National Semiconductor Algorithm may also be used but it will have longer programming time.) The EPROM must not be programmed with a DC signal applied to the CE/PGM input ...

Page 8

Functional Description (Continued) are held Address pin A0 is held code, and held at V for the device code. The code is read on the IH eight data pins, O0 – ...

Page 9

... Pin # IDENT 1.393 - 1.420 (35.38 - 36.07) 0.053 - 0.069 (1.346 - 1.753) 0.108 0.010 0.050 0.015 (2.540 0.254) (1.270 0.381) Order Number NM27C512N Package Number N28B 9 0.590-0.620 [14.99-15.75] 90 -100 0.008-0.012 TYP [0.203-0.305] TYP +0.025 0.685 -0.060 +0.635 [17.399 ] -1 ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted 0.485-0.495 [12.32-12.57] 0.007[0.18] 0.449-0.453 [11.40-11.51] 0.045 0.007[0.18] [1.143] 0.002[0.05] 0.000-0.010 [0.00-0.25] Polished Optional 4 5 0.549-0.553 [13.94-14.05] -B- 0.585-0.595 [14.86-15.11] - 0.002[0.05 F-G 0.007[0.18] A F-G S ...

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