Features
• Fast Read Access Time - 90 ns
• Dual Voltage Range Operation
•
•
•
•
•
•
•
•
•
– Low Voltage Power Supply Range, 3.0V to 3.6V
– or Standard 5V ± 10% Supply Range
Compatible with JEDEC Standard AT27C020
Low Power CMOS Operation
– 20 µA max. (less than 1 µA typical) Standby for VCC = 3.6V
– 29 mW max. Active at 5 MHz for VCC = 3.6V
JEDEC Standard Packages
– 32-lead PLCC
– 32-lead TSOP (8 x 20 mm)
– 32-lead VSOP (8 x 14 mm)
High Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
Rapid™ Programming Algorithm - 100 µs/byte (typical)
Two-line Control
CMOS and TTL Compatible Inputs and Outputs
– JEDEC Standard for LVTTL
Integrated Product Identification Code
Commercial and Industrial Temperature Ranges
2-Megabit
(256K x 8)
Low Voltage
OTP EPROM
AT27LV020A
Description
The AT27LV020A is a high performance, low power, low voltage 2,097,152 bit onetime programmable read only memory (OTP EPROM) organized as 256K by 8 bits. It
requires only one supply in the range of 3.0 to 3.6V in normal read mode operation,
making it ideal for fast, portable systems using battery power.
(continued)
Pin Configurations
Pin Name
Function
A0 - A17
Addresses
O0 - O7
Outputs
CE
Chip Enable
OE
Output Enable
PGM
Program Strobe
NC
No Connect
29
28
27
26
25
24
23
22
21
14
15
16
17
18
19
20
5
6
7
8
9
10
11
12
13
O1
O2
GND
O3
O4
O5
O6
A7
A6
A5
A4
A3
A2
A1
A0
O0
4
3
2
1
32
31
30
A12
A15
A16
VPP
VCC
PGM
A17
PLCC, Top View
TSOP/VSOP Top View
Type 1
A11
A9
A8
A13
A14
A17
PGM
VCC
VPP
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE
A10
CE
O7
O6
O5
O4
O3
GND
02
01
O0
A0
A1
A2
A3
A14
A13
A8
A9
A11
OE
A10
CE
O7
Rev. 0549E–04/01
1
Atmel’s innovative design techniques provide fast speeds
that rival 5V parts while keeping the low power consumption of a 3V supply. At V CC = 3.0V, any byte can be
accessed in less than 90 ns. With a typical power dissipation of only 18 mW at 5 MHz and V C C = 3.3V, the
AT27LV020A consumes less than one fifth the power of a
standard 5V EPROM. Standby mode supply current is typically less than 1 µA at 3.3V.
The AT27LV020A is available in industry standard JEDEC
approved one-time programmable (OTP) plastic PLCC,
TSOP, and VSOP. All devices feature two-line control (CE,
OE) to give designers the flexibility to prevent bus
contention.
The AT27LV020A operating with VCC at 3.0V produces TTL
level outputs that are compatible with standard TTL logic
devices operating at VCC = 5.0V. The device is also capable of standard 5-volt operation making it ideally suited for
dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts.
Atmel's AT27LV020A has additional features to ensure
high quality and efficient production use. The Rapid™Programming Algorithm reduces the time required to program
the part and guarantees reliable programming. Programming time is typically only 100 µs/byte. The Integrated
Block Diagram
2
AT27LV020A
Product Identification Code electronically identifies the
device and manufacturer. This feature is used by industry
standard programming equipment to select the proper programming algorithms and voltages. The AT27LV020A programs exactly the same way as a standard 5V AT27C020
and uses the same programming equipment.
System Considerations
Switching between active and standby conditions via the
Chip Enable pin may produce transient voltage excursions.
Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device
non-conformance. At a minimum, a 0.1 µF high frequency,
low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected
between the V CC and Ground terminals of the device, as
close to the device as possible. Additionally, to stabilize the
supply voltage level on printed circuit boards with large
EPROM arrays, a 4.7 µF bulk electrolytic capacitor should
be utilized, again connected between the VCC and Ground
terminals. This capacitor should be positioned as close as
possible to the point where the power supply is connected
to the array.
AT27LV020A
Absolute Maximum Ratings*
Temperature Under Bias.................................. -40°C to +85°C
*NOTICE:
Storage Temperature ..................................... -65°C to +125°C
Voltage on any Pin with
with Respect to Ground ..................................-2.0V to +7.0V(1)
Voltage on A9 with
Respect to Ground .......................................-2.0V to +14.0V(1)
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
VPP Supply Voltage with
Respect to Ground .......................................-2.0V to +14.0V(1)
Note:
1.
Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is
VCC + 0.75V DC which may be exceeded if certain precautions are observed (consult application notes) and which may
overshoot to +7.0V for pulses of less than 20 ns.
Operating Modes
Mode/Pin
Read
CE
(2)
VIL
Output Disable
(2)
OE
VIL
PGM
(1)
X
Ai
Ai
VPP
X
VCC
Outputs
VCC
(2)
DOUT
(2)
High Z
X
VIH
X
X
X
VCC
Standby(2)
VIH
X
X
X
X
VCC(2)
High Z
Rapid Program(3)
VIL
VIH
VIL
Ai
VPP
VCC(3)
DIN
VPP
VCC
(3)
DOUT
VCC
(3)
High Z
PGM Verify
(3)
VIL
VIL
VIH
Ai
(3)
PGM Inhibit
VIH
X
X
X
VPP
Product Identification(3)(5)
VIL
VIL
X
A9 = VH(4)
A0 = VIH or VIL
A1 - A17 = VIL
X
Notes:
VCC(3)
Identification Code
1. X can be VIL or VIH.
2. Read, output disable, and standby modes require, 3.0V ≤ VCC ≤=3.6V, or 4.5V ≤ VCC ≤ 5.5V.
3. Refer to Programming Characteristics. Programming modes require VCC = 6.5V.
4. VH = 12.0 ± 0.5V.
5. Two identifier bytes may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled
low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.
3
DC and AC Operating Conditions for Read Operation
Operating Temperature
(Case)
Com.
Ind.
VCC Power Supply
AT27LV020A-90
AT27LV020A-12
AT27LV020A-15
0°C - 70°C
0°C - 70°C
0°C - 70°C
-40°C - 85°C
-40°C - 85°C
-40°C - 85°C
3.0V to 3.6V
3.0V to 3.6V
3.0V to 3.6V
5V ± 10%
5V ± 10%
5V ± 10%
DC and Operating Characteristics for Read Operation
Symbol
Parameter
Condition
Min
Max
Units
VIN = 0V to VCC
±1
µA
VOUT = 0V to VCC
±5
µA
VPP = VCC
10
µA
ISB1 (CMOS), CE = VCC=± 0.3V
20
µA
ISB2 (TTL), CE = 2.0 to VCC + 0.5V
100
µA
8
mA
VCC = 3.0V to 3.6V
ILI
Input Load Current
ILO
IPP1
Output Leakage Current
(2)
(1)
Read/Standby Current
ISB
VCC Standby Current(1)
ICC
VCC Active Current
VIL
Input Low Voltage
-0.6
0.8
V
VIH
Input High Voltage
2.0
VCC + 0.5
V
VOL
Output Low Voltage
IOL = 2.0 mA
0.4
V
VOH
Output High Voltage
IOH = -2.0=mA
f = 5 MHz, IOUT = 0 mA, CE = VIL
2.4
V
VCC = 4.5V to 5.5V
ILI
Input Load Current
VIN = 0V to VCC
±1
µA
ILO
Output Leakage Current
VOUT = 0V to VCC
±5
µA
IPP1(2)
Read/Standby Current(1)
VPP = VCC
10
µA
VCC Standby Current(1)
ISB1 (CMOS), CE = VCC ± 0.3V
100
µA
ISB
ISB2 (TTL), CE = 2.0 to VCC + 0.5V
1
mA
ICC
VCC Active Current
f = 5 MHz, IOUT = 0 mA, CE = VIL
25
mA
VIL
Input Low Voltage
-0.6
0.8
V
VIH
Input High Voltage
2.0
VCC + 0.5
V
VOL
Output Low Voltage
IOL = 2.1 mA
0.4
V
VOH
Output High Voltage
IOH = -400 µA
Notes:
2.4
V
1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP.
2. VPP may be connected directly to VCC, except during programming. The supply current would then be the sun of ICC and IPP.
4
AT27LV020A
AT27LV020A
AC Characteristics for Read Operation
VCC = 3.0V to 3.6V and 4.5V to 5.5V
AT27LV020A
-90
Symbol
Parameter
Condition
tACC(3)
Address to Output Delay
CE = OE = VIL
90
tCE(2)
Max
Min
-15
Max
Min
Max
Units
120
150
ns
CE to Output Delay
OE = VIL
90
120
150
ns
(2)(3)
OE to Output Delay
CE = VIL
50
50
60
ns
(4)(5)
OE or CE High to Output Float,
whichever occurred first
40
40
50
ns
tOE
tDF
Min
-12
Output Hold from Address, CE or OE,
whichever occurred first
tOH
0
0
0
ns
AC Waveforms for Read Operation
Notes:
1.
Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.
2.
OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE.
3.
OE may be delayed up to tACC - tOE after the address is valid without impact on tACC.
4.
This parameter is only sampled and is not 100% tested.
5.
Output float is defined as the point when data is no longer driven.
5
Input Test Waveform and
Measurement Level
Output Test Load
tR, tF < 20 ns (1% to 90%)
Note:
CL = 1 pF including jig capacitance.
Pin Capacitance
f = 1 MHz, T = 25°C(1)
Symbol
Typ
Max
Units
Conditions
CIN
4
8
pF
VIN = 0V
COUT
8
12
pF
VOUT = 0V
Note:
6
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
AT27LV020A
AT27LV020A
Programming Waveforms(1)
Notes:
1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH.
2. tOE and tDFP are characteristics of the device but must be accommodated by the programmer.
3. When programming the AT27LV020A a 0.1 µF capacitor is required across VPP and ground to suppress spurious voltage
transients.
DC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Limits
Symbol
Parameter
Test Conditions
ILI
Input Load Current
VIN = VIL, VIH
VIL
Input Low Level
VIH
Input High Level
VOL
Output Low Voltage
IOL = 2.1 mA
VOH
Output High Voltage
IOH = -400=µA
ICC2
VCC Supply Current (Program and Verify)
IPP2
VPP Supply Current
VID
A9 Product Identification Voltage
Min
Max
Units
±10
µA
-0.6
0.8
V
2.0
VCC + 0.5
V
0.4
V
2.4
CE = PGM = VIL
11.5
V
40
mA
20
mA
12.5
V
7
AC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Limits
(1)
Min
Test Conditions
Max
Units
Symbol
Parameter
tAS
Address Setup Time
2
µs
tCES
CE Setup Time
2
µs
tOES
OE Setup Time
2
µs
tDS
Data Setup Time
2
µs
tAH
Address Hold Time
0
µs
tDH
Data Hold Time
2
µs
tDFP
OE High to Output Float Delay(3)
Input Rise and Fall Times
(10% to 90%) 20 ns
Input Pulse Levels
0.45V to 2.4V
tVPS
VPP Setup Time
tVCS
VCC Setup Time
tPW
PGM Program Pulse Width(2)
tOE
Data Valid from OE
tPRT
VPP Pulse Rise Time During
Programming
Notes:
0
Input Timing Reference Level
0.8V to 2.0V
Output Timing Reference Level
0.8V to 2.0V
130
ns
2
µs
2
µs
95
105
µs
150
ns
50
ns
1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.
2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven
—see timing diagram.
3. Program Pulse width tolerance is 100 µsec=±=5%.
Atmel’s 27LV020A Integrated Product Identification Code(1)
Pins
A0
O7
O6
O5
O4
O3
O2
O1
O0
Hex
Data
Manufacturer
0
0
0
0
1
1
1
1
0
1E
Device Type
1
1
0
0
0
0
1
1
0
86
Codes
Note:
8
1. The AT27LV020A has the same Product Identification Code as the AT27C020. Both are programming compatible.
AT27LV020A
AT27LV020A
Rapid Programming Algorithm
A 100 µs PGM pulse width is used to program. The
address is set to the first location. VCC is raised to 6.5V and
VPP is raised to 13.0V. Each address is first programmed
with one 100 µs PGM pulse without verification. Then a
verification/reprogramming loop is executed for each
address. In the event a byte fails to pass verification, up to
10 successive 100 µs pulses are applied with a verification
after each pulse. If the byte fails to verify after 10 pulses
have been applied, the part is considered failed. After the
byte verifies properly, the next address is selected until all
have been checked. VPP is then lowered to 5.0V and VCC to
5.0V. All bytes are read again and compared with the original data to determine if the device passes or fails.
9
Ordering Information
ICC (mA)
VCC = 3.6V
tACC
(ns)
Active
Standby
90
8
120
150
Ordering Code
Package
0.02
AT27LV020A-90JC
AT27LV020A-90TC
AT27LV020A-90VC
32J
32T
32V
Commercial
(0°C to 70°C)
8
0.02
AT27LV020A-90JI
AT27LV020A-90TI
AT27LV020A-90VI
32J
32T
32V
Industrial
(-40°C to 85°C)
8
0.02
AT27LV020A-12JC
AT27LV020A-12TC
AT27LV020A-12VC
32J
32T
32V
Commercial
(0°C to 70°C)
8
0.02
AT27LV020A-12JI
AT27LV020A-12TI
AT27LV020A-12VI
32J
32T
32V
Industrial
(-40°C to 85°C)
8
0.02
AT27LV020A-15JC
AT27LV020A-15TC
AT27LV020A-15VC
32J
32T
32V
Commercial
(0°C to 70°C)
8
0.02
AT27LV020A-15JI
AT27LV020A-15TI
AT27LV020A-15VI
32J
32T
32V
Industrial
(-40°C to 85°C)
Package Type
32J
32-Lead, Plastic J-Leaded Chip Carrier (PLCC)
32T
32-Lead, Plastic Thin Small Outline Package (TSOP) 8 x 20 mm
32V
32-Lead, Plastic Thin Small Outline Package (VSOP) 8 x 14 mm
10
AT27LV020A
Operation Range
AT27LV020A
Packaging Information
32J, 32-Lead, Plastic J-Leaded Chip Carrier (PLCC)
Dimensions in Inches and (Millimeters)
JEDEC STANDARD MS-016 AE
32T, 32-Lead, Plastic Thin Small Outline Package
(TSOP)
Dimensions in Millimeters and (Inches)*
JEDEC OUTLINE MO-142 BD
.045(1.14) X 45˚
PIN NO. 1
IDENTIFY
.025(.635) X 30˚ - 45˚
.012(.305)
.008(.203)
.553(14.0)
.547(13.9)
.595(15.1)
.585(14.9)
.032(.813)
.026(.660)
.050(1.27) TYP
.300(7.62) REF
.430(10.9)
.390(9.90)
AT CONTACT
POINTS
INDEX
MARK
.530(13.5)
.490(12.4)
18.5(.728)
18.3(.720)
20.2(.795)
19.8(.780)
.021(.533)
.013(.330)
.030(.762)
.015(.381)
.095(2.41)
.060(1.52)
.140(3.56)
.120(3.05)
0.50(.020)
BSC
7.50(.295)
REF
0.25(.010)
0.15(.006)
8.20(.323)
7.80(.307)
1.20(.047) MAX
0.15(.006)
0.05(.002)
.022(.559) X 45˚ MAX (3X)
0
5 REF
.453(11.5)
.447(11.4)
.495(12.6)
.485(12.3)
0.20(.008)
0.10(.004)
0.70(.028)
0.50(.020)
*Controlling dimensions: millimeters
32V, 32-Lead, Plastic Thin Small Outline Package
(VSOP)
Dimensions in Inches and (Millimeters)
JEDEC OUTLINE MO-142 BA
INDEX
MARK
12.5(.492)
12.3(.484)
0.50(.020)
BSC
7.50(.295)
REF
14.2(.559)
13.8(.543)
0.25(.010)
0.15(.006)
8.10(.319)
7.90(.311)
1.20(.047) MAX
0.15(.006)
0.05(.002)
0
5 REF
0.20(.008)
0.10(.004)
0.70(.028)
0.50(.020)
11
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© Atmel Corporation 2001.
Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s website. The Company assumes no responsibility for
any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without
notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are
not authorized for use as critical components in life suppor t devices or systems.
Marks bearing
®
and/or
™
are registered trademarks and trademarks of Atmel Corporation.
Terms and product names in this document may be trademarks of others
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0549E–04/01/xM
