AMD Advanced Micro Devices AM27C020-55PI, AM27C020-55PC5, AM27C020-55PC, AM27C020-55JI5, AM27C020-55JI Datasheet
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FINAL
Publication# 11507 Rev: H Amendment/0
Issue Date: May 1998
Am27C020
2 Megabit (256 K x 8-Bit) CMOS EPROM
DISTINCTIVE CHARACTERISTICS
■ Fast access time
— Speed options as fast as 55 ns
■ Low power consumption
— 100 µA maximum CMOS standby current
■ JEDEC-approved pinout
— Plug in upgrade of 1 Mbit EPROM
— Easy upgrade from 28-pin JEDEC EPROMs
■ Single +5 V power supply
■ ±10% power supply tolerance standard
■ 100% Flashrite™ programming
— Typical programming time of 32 seconds
■ Latch-up protected to 100 mA from –1 V to
V
CC
+ 1 V
■ High noise immunity
■ Compact 32-pin DIP, PDIP, and PLCC packages
GENERAL DESCRIPTION
The Am27C020 is a 2 Megabit, ultravio let erasable programmable read-only memor y. It is organized as 256
Kwords 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 windowed ceramic DIP packages, as well
as plastic one time programmable (OTP) PDIP and
PLCC packages.
Data can be typically accessed in less than 55 ns, allowing high-p erformance m icroproces sors to ope rate
without any WAIT states. The device offers separate
Output Enable (OE#) and Chip Enable (CE#) controls,
thus eliminating bus contention in a mul tiple bus microprocessor system.
AMD’s CMOS process technology provides high
speed, low power, and high noise immunity. Typica l
power consumption is only 100 mW in active mode,
and 100 µW in standby mode.
All signals are TTL levels, including programming signals. Bit locations may be programmed singly, in
blocks, or at random. The device supports AMD’s
Flashrite programming alg orithm (100 µs pulses), resulting in a typical programming time of 32 seconds.
BLOCK DIAGRAM
11507H-1
A0–A17
Address
Inputs
PGM#
CE#
OE#
V
CC
V
SS
V
PP
Data Outputs
DQ0–DQ7
Output
Buffers
Y
Gating
2,097,152
Bit Cell
Matrix
X
Decoder
Y
Decoder
Output Enable
Chip Enable
and
Prog Logic
2 Am27C020
PRODUCT SELECTOR GUIDE
CONNECTION DIAGRAMS
Top View
DIP PLCC
Notes:
1. JEDEC nomenclature is in parenthesis.
2. The 32-pin DIP to 32-pin PLCC configuration varies from the JEDEC 28-pin DIP to 32-pin PLCC configuration.
PIN DESIGNATIONS
A0–A17 = Address Inputs
CE# (E#) = Chip Enable Input
DQ0–DQ7 = Data Input/Outputs
OE# (G#) = Output Enable Input
PGM# (P#) = Program Enable Input
V
CC
=VCC Supply Voltage
V
PP
= Program Voltage Input
V
SS
= Ground
LOGIC SYMBOL
Family Part Number Am27C020
Speed Options
V
CC
= 5.0 V ± 5% -55 -75 -255
V
CC
= 5.0 V ± 10% 55 -70 -90 -120 -150 -200
Max Access Time (ns) 55 70 90 120 150 200 250
CE# (E#) Access (ns) 55 70 90 120 150 200 250
OE# (G#) Access (ns) 35 40 40 50 65 75 100
3
4
5
2
1
9
10
11
12
13
27
26
25
24
23
7
8
22
21
6
32
31
20
14
30
29
28
15
16
19
18
17
A6
A5
A4
A3
A2
A1
A0
A16
DQ0
A15
A12
A7
DQ1
DQ2
V
SS
A8
A9
A11
OE# (G#)
A10
CE# (E#)
DQ7
V
CC
PGM# (P#)
DQ6
A17
A14
A13
DQ5
DQ4
DQ3
V
PP
11507H-2
DQ6
V
PP
DQ5
DQ4
DQ3
13130234
5
6
7
8
9
10
11
12
13
17
18
19 2016
15
14
29
28
27
26
25
24
23
22
21
32
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
A14
A13
A8
A9
A11
OE# (G#)
A10
CE# (E#)
DQ7
A12
A15
A16
V
CC
PGM# (P#)
A17
DQ1
DQ2
V
SS
11507H-3
18
8
DQ0–DQ7
A0–A17
CE# (E#)
OE# (G#)
11507H-4
PGM# (P#)
Am27C020 3
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 the following:
Valid Combinations
Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales
office to confirm availability of specific valid combinations and
to check on newly released combinations.
DEVICE NUMBER/DESCRIPTION
Am27C020
2 Megabit (256 K x 8-Bit) CMOS UV EPROM
AM27C020 -55 D C
OPTIONAL PROCESSING
Blank = Standa rd Pro ces sin g
B = Burn -In
VOLTAGE TOLERANCE
5=V
CC
± 5%, 55 ns only
See Product Selector Guide and Valid Combinations
TEMPERATURE RANGE
C = Commercial (0°C to +70
°C)
I=Industrial (–40
°C to +85°C)
E = Extended (–55°C to +125°C)
PACKAGE TYPE
D = 32-Pin Ceramic DIP (CDV032)
SPEED OPTION
See Product Selector Guide and Valid Combinations
5
B
Valid Combinations
AM27C020-55
V
CC
= 5.0 V ± 5%
DC5, DC5B, DI5, DI5B
AM27C020-55
V
CC
= 5.0 V ± 10%
DC, DCB, DI, DIB
AM27C020-70
AM27C020-90
AM27C020-120
DC, DCB, DI, DIB, DE, DEBAM27C020-150
AM27C020-200
AM27C020-255
V
CC
= 5.0 V ± 5%
DC, DCB, DI, DIB
4 Am27C020
ORDERING INFORMATION
OTP EPROM Products
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed
by a combination of the following:
Valid Combinations
Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales
office to confirm availability of specific valid combinations and
to check on newly released combinations.
DEVICE NUMBER/DES CR IP TIO N
Am27C020
2 Megabit (256 K x 8-Bit) CMOS OTP EPROM
AM27C020 -55 J C
OPTIONAL PROCESSING
Blank = Standard Processing
VOLTAGE TOLERANCE
5=V
CC
± 5%, 55 ns only
See Product Selector Guide and Valid Combinations
TEMPERATURE RANGE
C = Commercial (0
°C to +70°C)
I=Industrial (–40
°C to +85°C)
PACKAGE TYPE
P = 32-Pin Plastic DIP (PD 032)
J = 32-Pin Plastic Leaded Chip Carrier (PL 032)
SPEED OPTION
See Product Selector Guide and Valid Combinations
5
Valid Combinations
AM27C020-55
V
CC
= 5.0 V ± 5%
PC5, PI5, JC5, JI5
AM27C020-55
V
CC
= 5.0 V ± 10%
JC, PC, JI, PI
AM27C020-75
AM27C020-90
AM27C020-120
AM27C020-150
AM27C020-200
AM27C020-255
V
CC
= 5.0 V ± 5%
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