FM27C256Q90 Fairchild Semiconductor, FM27C256Q90 Datasheet

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FM27C256Q90

Manufacturer Part Number
FM27C256Q90
Description
256K-Bit (32K x 8) High Performance CMOS EPROM
Manufacturer
Fairchild Semiconductor
Datasheet

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© 1998 Fairchild Semiconductor Corporation
FM27C256
The FM27C256 is a 256K Electrically Programmable Read Only
Memory. It is manufactured in 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 FM27C256 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 FM27C256 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 FM27C256 is configured in the standard EPROM pinout
which provides an easy upgrade path for systems which are
currently using standard EPROMs.
A 0 - A 14
CE/PGM
Address
Inputs
GND
V CC
V PP
OE
and Chip Enable Logic
Output Enable
X Decoder
Y Decoder
The FM27C256 is one member of a high density EPROM Family
which range in densities up to 4 Mb.
I High performance CMOS
I JEDEC standard pin configuration
I Drop-in replacement for 27C256 or 27256
I Manufacturer’s identification code
— 90 ns access time
— 28-pin PDIP package
— 32-pin chip carrier
— 28-pin CERDIP package
Data Outputs O 0 - O 7
Y Gating
Buffers
Output
www.fairchildsemi.com
www.fairchildsemi.com
January 2000
DS800034-1

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FM27C256Q90 Summary of contents

Page 1

... GND CE/PGM Address Inputs © 1998 Fairchild Semiconductor Corporation FM27C256 The FM27C256 is one member of a high density EPROM Family which range in densities Mb. I High performance CMOS — access time I JEDEC standard pin configuration — 28-pin PDIP package — ...

Page 2

XX GND GND Compatible EPROM pin configurations are shown ...

Page 3

Storage Temperature All Input Voltages except A9 with Respect to Ground V and A9 with Respect PP to Ground V Supply Voltage with CC Respect to Ground V Input Low Level IL V Input High Level IH V Output Low ...

Page 4

Output Load 1 TTL Gate and CL = 100 pF (Note 8) Input Rise and Fall Times Input Pulse Levels Timing Measurement Reference Level (Note 10) Inputs Outputs (Note 6) (Note 7) (Note 9) ADDRESSES CE OE OUTPUT Stresses above ...

Page 5

Address Setup Time Setup Time OES t V Setup Time VPS Setup Time VCS CC t Data Setup Time DS t Address Hold Time AH t Data Hold Time DH t Output Enable ...

Page 6

DEVICE YES FAILED INCREMENT ADDRESS The standard National Semiconductor algorithm may also be used but it will have longer programming time. FM27C256 12.75V ADDRESS = FIRST LOCATION PROGRAM ONE 50µs ...

Page 7

... The code for FM27C256 is “8F04”, where “8F” designates that it is made by Fairchild Semiconductor, and “04” designates a 256K part. The code is accessed by applying 12V ±0.5V to address pin A9. Addresses A1–A8, A10–A16, and all control pins are held at V ...

Page 8

The erasure characteristics of the device are such that erasure begins to occur when exposed to light with wavelengths shorter than approximately 4000 Angstroms (Å). It should be noted that sunlight and certain types of fluorescent lamps have wavelengths ...

Page 9

R 0.025 [0.64 0.030-0.055 [0.76 - 1.40] TYP 0.005 MIN TYP 0.225 MAX TYP 0.125 MIN TYP 0.090-0.110 0.060-0.100 TYP TYP 0.030 Max (0.762) 0.600 - 0.620 (15.24 - 15.75) 95° ±5° ...

Page 10

... S Fairchild's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President of Fairchild Semiconductor Corporation. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support ...

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