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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 V

= 3.6V

– 29 mW max. Active at 5 MHz for V

= 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

Description

The AT27LV020A is a high performance, low power, low voltage 2,097,152 bit one-

time 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.

Rev. 0549E–04/01

2-Megabit

(256K x 8)

Low Voltage

OTP EPROM

AT27LV020A

Pin Configurations

Pin Name Function

A0 - A17 Addresses

O0 - O7 Outputs

Chip Enable

Output Enable

PGM

Program Strobe

NC No Connect

PLCC, Top View

A14

A13

A11

A10

GND

A12

A15

A16

VPP

VCC

PGM

A17

TSOP/VSOP Top View

Typ e 1

A11

A13

A14

A17

PGM

VCC

VPP

A16

A15

A12

A10

GND

(continued)

Summary of content (12 pages)

PAGE 1
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.
PAGE 2
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.
PAGE 3
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.
PAGE 4
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.
PAGE 5
AT27LV020A AC Characteristics for Read Operation VCC = 3.0V to 3.6V and 4.5V to 5.
PAGE 6
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.
PAGE 7
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.
PAGE 8
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.
PAGE 9
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.
PAGE 10
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.
PAGE 11
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 .
PAGE 12
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