at27c520-90xi ATMEL Corporation, at27c520-90xi Datasheet

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at27c520-90xi

Manufacturer Part Number
at27c520-90xi
Description
512k 64k X 8 Multiplexed Addresses/ Outputs Low-voltage Otp Eprom
Manufacturer
ATMEL Corporation
Datasheet
Features
1. 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 20-lead TSSOP and 20-lead SOIC, one-time program-
mable (OTP) plastic packages.
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 70 ns. With a typical power dissipation of only 18 mW at 5 MHz
and V
5V EPROM. Standby mode is achieved by asserting ALE high. Standby mode supply
current is typically less than 1 µA at 3.3V.
The AT27LV520 operating with V
patible with standard TTL logic devices operating at V
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.
8-bit Multiplexed Addresses/Outputs
Fast Read Access Time – 70 ns
Dual Voltage Range Operation
Pin Compatible with Standard AT27C520
Low-power CMOS Operation
JEDEC Standard Packages
High-reliability CMOS Technology
Rapid Programming Algorithm – 50 µs/Byte (Typical)
CMOS- and TTL-compatible Inputs and Outputs
Integrated Product Identification Code
Industrial Temperature Range
Green (Pb/Halide-free) Packaging Option
– Low-voltage Power Supply Range, 3.0V to 3.6V, or
– Standard 5V ± 10% Supply Range
– 20 µA Max Standby for ALE = V
– 29 mW Max Active at 5 MHz for V
– 20-lead TSSOP
– 20-lead SOIC
– 2,000V ESD Protection
– 200 mA Latch-up Immunity
– JEDEC Standard for LVTTL
CC
= 3.3V, the AT27LV520 consumes less than one fifth the power of a standard
CC
IH
at 3.0V produces TTL level outputs that are com-
CC
and V
= 3.6V
CC
= 3.6V
CC
CC
= 5.0V. The device is also
= 3.0V, any byte can be
512K (64K x 8)
Multiplexed
Addresses/
Outputs
Low-voltage
OTP EPROM
AT27LV520
Not Recommended
for New Designs.
0911G–EPROM–8/07

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at27c520-90xi Summary of contents

Page 1

... Fast Read Access Time – • 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 = V – Max Active at 5 MHz for V • ...

Page 2

... Programing time is typically only 50 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 AT27LV520 programs exactly the same way as a standard 5V AT27C520 and uses the same programming equipment. 2. Pin Configurations ...

Page 3

System Considerations Switching under active conditions may produce transient voltage excursions. Unless accommo- dated by the system design, these transients may exceed datasheet limits, resulting in device non-conformance minimum, a 0.1 µF high frequency, low inherent inductance, ...

Page 4

Operating Modes Mode/Pin (2) Read (2) Output Disable Standby (2) Address Latch Enable (3) Rapid Program (4) Product Identification Notes can IH. 2. Read, output disable, and standby modes require 3.0V ≤ ...

Page 5

AC Characteristics for Read Operation V = 3.0V to 3.6V and 4.5V to 5.5V CC Symbol Parameter (3) t Address to Output Delay ACC t Address Latch Enable Low to Output Delay CE t Address Setup Time AS t ...

Page 6

Input Test Waveforms and Measurement Levels < (10 12. Output Test Load Note: 13. Pin Capacitance ( MHz 25° C Symbol Typ ...

Page 7

Programming Waveforms 6. 5.0V 13V OE/VPP ALE ALE t LAS V IH AD7 - AD0 A15 - Notes: 1. The Input ...

Page 8

... Atmel’s AT27LV520 Integrated Product Identification Code Codes A8 AD7 Manufacturer 0 0 Device Type 1 1 Note: 1. The AT27LV520 has the same product identification code as the AT27C520. Both are programming compatible. AT27LV520 8 = 13.0 ± 0.25V PP Test Conditions Input Rise and Fall Times: (10 Input Pulse Levels: 0.45V to 2.4V (2) Input Timing Reference Level: 0 ...

Page 9

Rapid Programming Algorithm A 50 µs ALE pulse width is used to program. The address is set to the first location 6.5V and OE/V pulse without verification. Then a verification/reprogramming loop is executed for each address. In ...

Page 10

Ordering Information 19.1 Standard Package I (mA (ns) Active ACC 19.2 Green Package (Pb/Halide-free) I (mA (ns) Active ACC 20S 20-lead, 0.300" Wide, Plastic Gull Wing Small ...

Page 11

Packaging Information 20.1 20S – SOIC Dimensions in Millimeters and (Inches). Controlling dimension: Inches. JEDEC Standard MS-013 PIN 1 ID 2325 Orchard Parkway San Jose, CA 95131 R 0911G–EPROM–8/07 0.51(0.020) 0.33(0.013) PIN 1 1.27 (0.050) BSC 13.00 (0.5118) 12.60 ...

Page 12

TSSOP Dimensions in Millimeters and (Inches). Controlling dimension: Millimeters. JEDEC Standard MO-153 AC 0.65 (.0256) BSC 0º ~ 8º 2325 Orchard Parkway San Jose, CA 95131 R AT27LV520 12 PIN 1 4.50 (0.177) 4.30 (0.169) 6.60 (.260) ...

Page 13

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2007 Atmel Corporation. All rights reserved. Atmel Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. International Atmel Asia ...

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