AMD27C64-120DC AMD [Advanced Micro Devices], AMD27C64-120DC Datasheet

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AMD27C64-120DC

Manufacturer Part Number
AMD27C64-120DC
Description
64 Kilobit (8,192 x 8-Bit) CMOS EPROM
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
Am27C64
64 Kilobit (8,192 x 8-Bit) CMOS EPROM
DISTINCTIVE CHARACTERISTICS
GENERAL DESCRIPTION
The Am27C64 is a 64-Kbit ultraviolet erasable program-
mable read-only memory. It is organized as 8K words by
8 bits per word, operates from a single +5 V supply, has
a static standby mode, and features fast single address
location programming. Products are available in win-
dowed ceramic DIP packages as well as plastic one
time programmable (OTP) PDIP, and PLCC packages.
Typically, any byte can be accessed in less than 45 ns,
allowing operation with high-performance microproces-
sors without any WAIT states. The Am27C64 offers
separate Output Enable (OE) and Chip Enable (CE)
BLOCK DIAGRAM
2-10
Fast access time
— 45 ns
Low power consumption
— 20 A typical CMOS standby current
JEDEC-approved pinout
Single +5 V power supply
100% Flashrite
— Typical programming time of 1 second
10% power supply tolerance available
FINAL
Address
A0–A12
Inputs
TM
programming
PGM
OE
CE
Output Enable
Chip Enable
Prog Logic
V
V
V
Decoder
Decoder
CC
SS
PP
and
Y
X
controls, thus eliminating bus contention in a multiple
bus microprocessor system.
AMD’s CMOS process technology provides high speed,
low power, and high noise immunity. Typical power con-
sumption is only 80 mW in active mode, and 100 W in
standby mode.
All signals are TTL levels, including programming sig-
nals. Bit locations may be programmed singly, in blocks,
or at random. The Am27C64 supports AMD’s Flashrite
programming algorithm (100 s pulses) resulting in a
typical programming time of 1 second.
Latch-up protected to 100 mA from –1 V to
V
High noise immunity
Versatile features for simple interfacing
— Both CMOS and TTL input/output
— Two line control functions
Standard 28-pin DIP, PDIP, and 32-pin PLCC
packages
CC
compatibility
+ 1 V
Data Outputs
DQ0–DQ7
Buffers
65,538
Bit Cell
Output
Gating
Matrix
Y
Publication# 11419
Issue Date: May 1995
11419D-1
Rev. D
Advanced
Devices
Amendment /0
Micro

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AMD27C64-120DC Summary of contents

Page 1

FINAL Am27C64 64 Kilobit (8,192 x 8-Bit) CMOS EPROM DISTINCTIVE CHARACTERISTICS Fast access time — Low power consumption — typical CMOS standby current JEDEC-approved pinout Single +5 V power supply 10% power supply tolerance available TM ...

Page 2

PRODUCT SELECTOR GUIDE Family Part No. Ordering Part No 10% -45 CC Max Access Time (ns (E) Access Time (ns (G) Access Time (ns) 30 CONNECTION DIAGRAMS Top View DIP 1 28 ...

Page 3

AMD ORDERING INFORMATION UV EPROM Products AMD Standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of: AM27C64 -45 DEVICE NUMBER Am27C64 64 Kilobit (8,192 x 8-Bit) CMOS UV ...

Page 4

ORDERING INFORMATION OTP Products AMD Standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of: AM27C64 -55 DEVICE NUMBER Am27C64 64 Kilobit (8,192 x 8-Bit) CMOS OTP EPROM Valid ...

Page 5

AMD FUNCTIONAL DESCRIPTION Erasing the Am27C64 In order to clear all locations of their programmed con- tents necessary to expose the Am27C64 to an ultraviolet light source. A dosage seconds/cm required to completely erase an ...

Page 6

Output OR-Tieing To accommodate multiple memory connections, a two- line control function is provided to allow for: Low memory power dissipation Assurance that output bus contention will not occur It is recommended that CE be decoded and used as the ...

Page 7

AMD ABSOLUTE MAXIMUM RATINGS Storage Temperature OTP Products . . . . . . . . . . . . . . . All Other Products . . . . . . . . . . . . Ambient Temperature ...

Page 8

DC CHARACTERISTICS over operating range unless otherwise specified. (Notes and 4) Parameter Symbol Parameter Description V Output HIGH Voltage OH V Output LOW Voltage OL V Input HIGH Voltage IH V Input LOW Voltage IL I Input ...

Page 9

AMD CAPACITANCE Parameter Symbol Parameter Description C Input Capacitance IN C Output Capacitance OUT Notes: 1. This parameter is only sampled and not 100% tested + MHz. A SWITCHING CHARACTERISTICS over operating range ...

Page 10

SWITCHING TEST CIRCUIT Device Under Test C = 100 pF including jig capacitance (30 pF for -45, -55, -70) L SWITCHING TEST WAVEFORM 2.4 V 2.0 V Test Points 0.8 V 0.45 V Input AC Testing: Inputs are driven at ...

Page 11

AMD KEY TO SWITCHING WAVEFORMS SWITCHING WAVEFORMS 2.4 Addresses 0. High Z Output Notes may be delayed –t ACC is specified from whichever occurs first 2-20 ...

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