ATMEL AT27LV040A User Manual

BDTIC www.BDTIC.com/ATMEL

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 AT27C040

• Low Power 3.3-volt CMOS Operation

– 20 µA Max (Less than 1 µA Typical) Standby for V
– 36 mW Max Active at 5 MHz for V

• JEDEC Standard Packages

– 32-lead PLCC
– 32-lead TSOP
– 32-lead VSOP

• High Reliability CMOS Technology

– 2,000V ESD Protection
– 200 mA Latchup Immunity

• Rapid Programming Algorithm – 100 µs/Byte (Typical)

• CMOS and TTL Compatible Inputs and Outputs

– JEDEC Standard for LVTTL

• Integrated Product Identification Code

• Industrial Temperature Range

• Green (Pb/Halide-free) Packaging Option

= 3.6V

CC

= 3.6V

CC

4-Megabit
(512K x 8)
Low Voltage
OTP EPROM

AT27LV040A

1. Description

The AT27LV040A is a high-performance, low-power, low-voltage, 4,194,304-bit one­time programmable read-only memory (OTP EPROM) organized as 512K 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.

Atmel’s innovative design techniques provide fast speeds that rival 5V parts while
keeping the low power consumption of a 3V supply. At V
accessed in less than 90 ns. With a typical power dissipation of only 18 mW at 5 MHz
and V
dard 5V EPROM. Standby mode supply current is typically less than 1 µA at 3.3V.

The AT27LV040A is available in industry-standard JEDEC-approved one-time pro­grammable (OTP) plastic PLCC, TSOP, and VSOP packages. All devices feature two­line control (CE

The AT27LV040A operating with V
compatible with standard TTL logic devices operating at V
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 AT27LV040A 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 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
AT27LV040A programs exactly the same way as a standard 5V AT27C040 and uses
the same programming equipment.

= 3.3V, the AT27LV040A consumes less than one half the power of a stan-

CC

, OE) to give designers the flexibility to prevent bus contention.

at 3.0V produces TTL level outputs that are

CC

= 3.0V, any byte can be

CC

= 5.0V. The device is

CC

0557D–EPROM–12/07

2. Pin Configurations

Pin Name Function

A0 - A18 Addresses

O0 - O7 Outputs

CE

OE

2.1 32-lead TSOP/VSOP (Type 1) Top View

A11

A9

A8
A13
A14
A17
A18

VCC

VPP

A16
A15
A12

A7

A6

A5

A4

2.2 32-lead PLCC Top View

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

Chip Enable

Output Enable

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

A12

A15

A16

VPP

VCC

A18

A17

432

5

A7

6

A6

7

A5

8

A4

9

A3

10

A2

11

A1

12

A0

13

O0

2

AT27LV040A

14151617181920

O1

O2

1

O3O4O5

GND

323130

29
28
27
26
25
24
23
22
21

O6

A14
A13
A8
A9
A11
OE
A10
CE
O7

0557D–EPROM–12/07

3. 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
datasheet 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
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 V
possible to the point where the power supply is connected to the array.

4. Block Diagram

AT27LV040A

and Ground terminals of the device, as close to the

CC

and Ground terminals. This capacitor should be positioned as close as

CC

5. Absolute Maximum Ratings*

Temperature Under Bias.................................. -40°C to +85°C

Storage Temperature ..................................... -65°C to +125°C

Voltage on Any Pin with

Respect to Ground .........................................-2.0V to +7.0V

Voltage on A9 with

Respect to Ground ......................................-2.0V to +14.0V

VPP Supply Voltage with

Respect to Ground .......................................-2.0V to +14.0V

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

V

+ 0.75V DC which may be exceeded if certain precautions are observed (consult application notes) and which may

CC

overshoot to +7.0V for pulses of less than 20 ns.

(1)

(1)

(1)

*NOTICE: 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

0557D–EPROM–12/07

3

6. Operating Modes

Mode/Pin CE OE Ai V

(2)

Read

Output Disable

Standby

Rapid Program

PGM Verify

PGM Inhibit

(2)

(2)

(3)

(3)

(3)

Product Identification

(3)(5)

V

IL

V

IL

Ai X

XVIHXXVCCHigh Z

V

IH

V

IL

XXXVCCHigh Z

V

IH

Ai V

XVILAi V

V

IH

V

IL

V

IH

V

IL

XVPPV

A9 = V

(4)

H

A0 = VIH or VIL
A1 - A18 = V

IL

PP

(1)

PP

PP

XVCCIdentification Code

Notes: 1. X can be VIL or VIH.

2. Read, output disable, and standby modes require, 3.0V ≤ V

3. Refer to Programming Characteristics. Programming modes require V

≤ 3.6V, or 4.5V ≤ VCC ≤ 5.5V.

CC

= 6.5V.

CC

4. VH = 12.0 ± 0.5V.

5. Two identifier bytes may be selected. All Ai inputs are held low (V

), except A9 which is set to VH and A0 which is toggled

IL

low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.

7. DC and AC Operating Conditions for Read Operation

AT27LV040A-90

Industrial Operating Temperature (Case) -40°C - 85°C

V

CC

V

CC

V

CC

V

CC

CC

Outputs

D

OUT

D

IN

D

OUT

High Z

VCC Power Supply

3.0V to 3.6V

5V ± 10%

4

AT27LV040A

0557D–EPROM–12/07

AT27LV040A

8. DC and Operating Characteristics for Read Operation

Symbol Parameter Condition Min Max Units

= 3.0V to 3.6V

V

CC

I

LI

I

LO

(2)

I

PP1

I

SB

I

CC

V

IL

V

IH

V

OL

V

OH

= 4.5V to 5.5V

V

CC

I

LI

I

LO

(2)

I

PP1

I

SB

I

CC

V

IL

V

IH

V

OL

V

OH

Notes: 1. VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP.

Input Load Current VIN = 0V to V

Output Leakage Current V

(1)

V

Read/Standby Current VPP = V

PP

(1)

V

Standby Current

CC

= 0V to V

OUT

CC

I

(CMOS), CE = V

SB1

(TTL), CE = 2.0 to VCC + 0.5V 100 µA

I

SB2

VCC Active Current f = 5 MHz, I

CC

CC

CC ±

= 0 mA, CE = V

OUT

0.3V 20 µA

IL

±1µA

±5µA

10 µA

10 mA

Input Low Voltage -0.6 0.8 V

Input High Voltage 2.0 VCC + 0.5 V

Output Low Voltage IOL = 2.0 mA 0.4 V

Output High Voltage IOH = -2.0 mA 2.4 V

Input Load Current VIN = 0V to V

Output Leakage Current V

(1)

V

Read/Standby Current VPP = V

PP

(1)

V

Standby Current

CC

= 0V to V

OUT

CC

I

(CMOS), CE = VCC ± 0.3V 100 µA

SB1

(TTL), CE = 2.0 to VCC + 0.5V 1 mA

I

SB2

VCC Active Current f = 5 MHz, I

CC

CC

= 0 mA, CE = V

OUT

IL

±1µA

±5µA

10 µA

30 mA

Input Low Voltage -0.6 0.8 V

Input High Voltage 2.0 VCC + 0.5 V

Output Low Voltage IOL = 2.1 mA 0.4 V

Output High Voltage IOH = -400 µA 2.4 V

2. V

may be connected directly to VCC, except during programming. The supply current would then be the sum of ICC and IPP.

PP

0557D–EPROM–12/07

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