AT27LV520-70 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

View to exact match

AT27LV520-70

512K (64K x 8) Multiplexed Addresses/ Outputs Low-voltage OTP EPROM

Atmel Corporation 

Features

• 8-bit Multiplexed Addresses/Outputs

• Fast Read Access Time – 70 ns

• Dual Voltage Range Operation

– Low-voltage Power Supply Range, 3.0V to 3.6V, or

– Standard 5V ± 10% Supply Range

• Pin Compatible with Standard AT27C520

• Low-power CMOS Operation

– 20 µA max. Standby for ALE = VIH and VCC = 3.6V

– 29 mW max. Active at 5 MHz for VCC = 3.6V

• JEDEC Standard Packages

– 20-lead TSSOP

– 20-lead SOIC

• High-reliability CMOS Technology

– 2,000V ESD Protection

– 200 mA Latch-up Immunity

• Rapid™ Programming Algorithm – 50 µs/Byte (Typical)

• CMOS- and TTL-compatible Inputs and Outputs

– JEDEC Standard for LVTTL

• Integrated Product Identification Code

• Commercial and Industrial Temperature Range

Description

The AT27LV520 is a low-power, high-performance, 524,288-bit one-time programma-

ble read-only memory (OTP EPROM) organized 64K by eight bits. It incorporates

latches for the eight lower order address bits to multiplex with the eight data bits. This

minimizes system chip count, reduces cost, and simplifies the design of multiplexed

bus systems. It requires only one power supply in the range of 3.0V to 3.6V for normal

read mode operation, making it ideal for fast, portable systems using battery power.

Any byte can be accessed in less than 70 ns.

The AT27LV520 is available in 173 mil, 20-lead TSSOP and 300 mil, 20-lead SOIC,

one-time programmable (OTP) plastic packages.

(continued)

Pin Configurations

Pin Name

A8 - A15

AD0 - AD7

OE /VPP

ALE

Function

Addresses

Addresses/Outputs

Output Enable/Program Supply

Address Latch Enable

512K (64K x 8)

Multiplexed

Addresses/

Outputs

Low-voltage

OTP EPROM

AT27LV520

TSSOP Top View

A10 1

A12 2

A14 3

ALE 4

VCC 5

OE/VPP 6

A15 7

A13 8

A11 9

A9 10

20 A8

19 AD1

18 AD3

17 AD5

16 AD7

15 GND

14 AD6

13 AD4

12 AD2

11 AD0

SOIC Top View

OE/VPP 1

A15 2

A13 3

A11 4

A9 5

AD0 6

AD2 7

AD4 8

AD6 9

GND 10

20 VCC

19 ALE

18 A14

17 A12

16 A10

15 A8

14 AD1

13 AD3

12 AD5

11 AD7

Rev. 0911D–05/00

1

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