ATMEL AT27LV512A 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 AT27C512R

• Low Power CMOS Operation

– 20 µA Max (Less than 1 µA Typical) Standby for V – 29 mW Max Active at 5 MHz for V

• JEDEC Standard Packages

– 32-lead PLCC – 28-lead SOIC – 28-lead TSOP

• 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

512K (64K x 8) Low Voltage OTP EPROM

AT27LV512A

1. Description

The AT27LV512A is a high-performance, low-power, low-voltage 524,288-bit onetime programmable read-only memory (OTP EPROM) organized as 64K 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 3.3V 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 AT27LV512A is available in industry-standard JEDEC-approved one-time programmable (OTP) plastic PLCC, SOIC, and TSOP packages. All devices feature two-line control (CE

The AT27LV512A 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 AT27LV512A 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 AT27LV512A programs exactly the same way as a standard 5V AT27C512R and uses the same programming equipment.

= 3.3V, the AT27LV512A consumes less than one fifth the power of a stan-

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

at 3.0V produces TTL level outputs that are

= 3.0V, any byte can be

= 5.0V. The device is

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2. Pin Configurations

Pin Name Function

A0 - A15 Addresses

O0 - O7 Outputs

/VPP Output Enable/ Program Supply

NC No Connect

Chip Enable

2.1 28-lead SOIC Top View

A15 A12

A7 A6 A5 A4 A3 A2 A1

A0 O0 O1 O2

GND

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

28 27 26 25 24 23 22 21 20 19 18 17 16 15

2.2 32-lead PLCC Top View

A12

A6 A5 A4 A3 A2 A1 A0

A15NCVCC

432

5 6 7 8 9 10 11 12 13

14151617181920

A14

A13

323130

29 28 27 26 25 24 23 22 21

VCC A14 A13 A8 A9 A11 OE/VPP A10 CE O7 O6 O5 O4 O3

A8 A9 A11 NC OE/VPP A10 CE O7 O6

2.3 28-lead TSOP (Type 1) Top View

A11

A8 A13 A14

A15 A12

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

28 27 26 25 24 23 22 21 20 19 18 17 16 15

OE/VPP

VCC

A10 CE O7 O6 O5 O4 O3 GND O2 O1 O0 A0 A1 A2

GND

O3O4O5

Note: PLCC Package Pins 1 and 17 are Don’t Connect.

AT27LV512A

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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 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 V close as possible to the point where the power supply is connected to the array.

4. Block Diagram

AT27LV512A

and Ground terminals of the device, as close

and Ground terminals. This capacitor should be positioned as

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

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

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

(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

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6. Operating Modes

Mode/Pin CE OE/V

(2)

Read

Output Disable

Standby

Rapid Program

PGM Inhibit

(2)

(3)

Product Identification

(3)(5)

XXVCCHigh Z

Ai V

(1)

Ai V

XVCCHigh Z

A9 = V A0 = VIH or VIL A1 - A15 = V

(4)

Notes: 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 V

4. V

= 12.0 ± 0.5V.

= 6.5V.

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.

7. DC and AC Operating Conditions for Read Operation

AT27LV512A-90

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

VCC Power Supply

3.0V to 3.6V

5V ± 10%

Outputs

OUT

High Z

Identification Code

AT27LV512A

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AT27LV512A

8. DC and Operating Characteristics for Read Operation

Symbol Parameter Condition Min Max Units

= 3.0V to 3.6V

(2)

PP1

= 4.5V to 5.5V

(2)

PP1

Input Load Current VIN = 0V to V

Output Leakage Current V

(1)

Read/Standby Current VPP = V

(1)

Standby Current

= 0V to V

OUT

(CMOS), CE = V

SB1

(TTL), CE = 2.0 to VCC + 0.5V 100 µA

SB2

VCC Active Current f = 5 MHz, I

OUT

0.3V 20 µA

CC ±

= 0 mA, CE = V

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)

Read/Standby Current VPP = V

(1)

Standby Current

= 0V to V

OUT

(CMOS), CE = VCC ± 0.3V 100 µA

SB1

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

SB2

VCC Active Current f = 5 MHz, I

= 0 mA, CE = V

OUT

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 µA2.4V

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

2. OE

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

and I

±1 µA

±5 µA

10 µA

8mA

±1 µA

±5 µA

10 µA

20 mA

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