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512K (64K x 8)MultiplexedAddresses/OutputsLow VoltageOTP EPROM

AT27LV520

Features 8-Bit Multiplexed Addresses/Outputs 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

Low Power CMOS Operation

20 A max. Standby for ALE = V IH and V CC = 3.6V 29 mW max. Active at 5 MHz for V CC = 3.6V

20-Lead TSSOP Package High Reliability CMOS Technology

2,000V ESD Protection 200 mA Latchup Immunity

Rapid Programming Algorithm - 50 s/byte (typical) CMOS and TTL Compatible Inputs and Outputs

JEDEC Standard for LVTTL Integrated Product Identification Code Commercial and Industrial Temperature Range

DescriptionThe AT27LV520 is a low-power, high-performance 524,288-bit one-time programma-ble read only memory (OTP EPROM) organized 64K by 8 bits. It incorporates latchesfor the 8 lower order address bits to multiplex with the 8 data bits. This minimizes sys-tem chip count, reduces cost, and simplifies the design of multiplexed bus systems. Itrequires only one power supply in the range of 3.0V to 3.6V for normal read modeoperation, making it ideal for fast, portable systems using battery power. Any byte canbe accessed in less than 90 ns.The AT27LV520 is available in 173 mil, 20-pin TSSOP, 300 mil, 20-pin SOIC and 28-pin TSOP, one-time programmable (OTP) plastic packages.

Rev. 0911B-B01/98

Pin ConfigurationsPin Name Function

A8 - A15 Addresses

AD0 - AD7 Addresses/Outputs

OE /V PP Output Enable/V PPALE Address Latch Enable

TSSOP Top View

12345678910

20191817161514131211

A10A12A14ALEVCC

OE/VPPA15A13A11

A9

A8AD1AD3AD5AD7GNDAD6AD4AD2AD0

(continued)

TSOP Top View

22

23

24

25

26

27

2

3

4

5

6

7

21

20

19

18

17

16

15

14

13

12

11

10

9

8

A10

NC

NC

A12

A14

ALE

VCC

OE/VPP

A15

A13

A11

NC

NC

A9

A8

NC

NC

AD1

AD3

AD5

AD7

GND

AD6

AD4

AD2

NC

NC

AD0

28

1

SOIC Top View

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

OE/VPP

A15

A13

A11

A9

AD0

AD2

AD4

AD6

GND

VCC

ALE

A14

A12

A10

A8

AD1

AD3

AD5

AD7

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AT27LV520

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Absolute Maximum Ratings*Temperature Under Bias .............. .............. .... -55C to +125C *NOTICE: Stresses beyond those listed under Absolute

Maximum Ratings may cause permanent dam-age to the device. This is a stress rating only andfunctional operation of the device at these or anyother conditions beyond those indicated in the

operational sections of this specification is notimplied. Exposure to absolute maximum ratingconditions for extended periods may affect devicereliability.

Note: 1. Minimum voltage is -0.6V DC which may under-shoot to -2.0V for pulses of less than 20 ns. Max-imum output pin voltage is V CC + 0.75V DCwhich may overshoot to +7.0V for pulses of lessthan 20 ns.

Storage Temperature ............... ............... ....... -65C to +150C

Voltage on Any Pin with

Respect to Ground ........................................ -2.0V to +7.0V (1)

Voltage on A9 withRespect to Ground ..................................... -2.0V to +14.0V (1)

VPP Supply Voltage withRespect to Ground ...................................... -2.0V to +14.0V (1)

Operating Modes

Notes: 1. X can be V IL or V IH.2. Read, output disable, and standby modes require 3.0V VCC 3.6V, or 4.5V VCC 5.5V.

3. Refer to Programming Characteristics.

4. VH = 12.0 0.5V.

5. Two identifier bytes may be selected. All A8 - A15 inputs are held low (V IL), except A9 which is set to V H and A8 which is tog-gled low (V IL) to select the Manufacturers Identification byte and high (V IH) to select the Device Code byte.

Mode/Pin ALE OE/V PP A8 - A15 AD0 - AD7

Read (2) VIL VIL Ai DOUTOutput Disable (2) VIL /VIH VIH X

(1) High Z/A0 - A7

Standby V IH VIH Ai A0 - A7

Address Latch Enable (2) VIH VIH X A0 - A7

Rapid Program (3) VIH VPP Ai DIN

Product Identification (4) VIL VIL

A9 = V H(5)

A8 = V IH or V ILA10 - A15 = V IL

Identification Code

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AT27LV5204

DC and AC Operating Conditions for Read OperationAT27LV520-90

Operating Temp. (Case)Com. 0C - 70C

Ind. -40C - +85C

VCC Supply3.0V to 3.6V

5V 10%

DC and Operating Characteristics for Read Operation

Note: V CC standby current will be slightly higher with ALE, Ai, and ADi at TTL levels.

Symbol Parameter Condition Min Max Units

VCC = 3.0V to 3.6V

ILI Input Load Current V IN = 0V to V CC 1 A

ILO Output Leakage Current V OUT = 0V to V CC 5 A

ISB(1) VCC Standby Current ALE = V CC 0.3V; Ai, ADi = GND/V CC 0.3V 20 A

ICC VCC Active Current f = 5 MHz, I OUT = 0 mA, ALE = V IL 8 mA

VIL Input Low Voltage -0.6 0.8 V

VIH Input High Voltage 2.0 V CC + 0.5 VVOL Output Low Voltage I OL = 2.0 mA 0.4 V

VOH Output High Voltage I OH = -2.0 mA 2.4 V

VCC = 4.5V to 5.5V

ILI Input Load Current V IN = 0V to V CC 1 A

ILO Output Leakage Current V OUT = 0V to V CC 5 A

ISB(1) VCC Standby Current ALE = V CC 0.3V; Ai, ADi = GND/V CC 0.3V 100 A

ICC VCC Active Current f = 5 MHz, I OUT = 0 mA, ALE = V IL 20 mA

VIL Input Low Voltage -0.6 0.8 V

VIH Input High Voltage 2.0 V CC + 0.5 V

VOL Output Low Voltage I OL = 2.1 mA 0.4 V

VOH Output High Voltage I OH = -400 A 2.4

AC Characteristics for Read OperationVCC = 3.0V to 3.6V and 4.5V to 5.5V

Notes: 2, 3, 4 see AC Waveforms for Read Operation

Symbol Parameter Condition

AT27LV520-90

UnitsMin Max

tACC(3) Address to Output Delay ALE = OE/V PP = V IL 90 ns

tCE Address Latch Enable Low to Output Delay Address Valid 70 nstAS Address Setup Time OE/V PP = VIH 15 ns

tAH Address Hold Time OE/V PP = VIH 15 ns

tALE Address Latch Enable Width OE/V PP = VIH 45 ns

tOE(3) OE/V PP to Output Delay ALE = V IL 35 ns

tDF(4)(5) OE/V PP High to Output Float ALE = V IL 25 ns

tOH Output Hold from Address or OE/V PP, whichever occurred first ALE = V IL 0 ns

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Output Test Load

Note: C L = 100 pF including jigcapacitance.

Input Test Waveforms and Measurement Levels

tR, tF < 20 ns (10% to 90%)

AC Waveforms for Read Operation (1)

Notes: 1. Timing measurement reference levels for all speed grades are V OL = 0.8V and V OH = 2.0V. Input AC drive levels are V IL =0.45V and V IH = 2.4V.

2. OE/V PP may be delayed up to t CE - tOE after the address is valid without impact on t CE .3. OE /VPP may be delayed up to t ACC - tOE after the address is valid without impact on t ACC.

4. This parameter is only sampled and is not 100% tested.

5. Output float is defined as the point when data is no longer driven.

ALE

OE/V PP

AD7 - AD0

A15 - A8

tALE

ADDRESS IN

tAS tAH

DATA OUT

tOE

tACC

tDFtOH

tCE

Pin Capacitance (Note:)(f = 1 MHz, T = 25 C)

Note: Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.

Typ Max Units Conditions

CIN 4 6 pF V IN = 0V

COUT 8 12 pF V OUT = 0V

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AC Programming Characteristics*TA = 25 5 C, V CC = 6.5 0.25V, OE/V PP = 13.0 0.25V

Notes: 1. V CC must be applied simultaneously or before OE/V PP and removed simultaneously or after OE/V PP.

2. Program Pulse width tolerance is 50 sec 5%.3. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven

see timing diagram.

Symbol Parameter (1) Test Conditions

Limits

UnitsMin Max

tALE Address Latch Enable Width

Input Rise and Fall Times(10% to 90%) 20 ns

Input Pulse Levels0.45V to 2.4V

Input Timing Reference Level0.8V to 2.0V

Output Timing Reference Level0.8V to 2.0V

500 nstLAS Latched Address Setup Time 100 ns

tLAH Latched Address Hold Time 100 ns

tLP ALE Low to OE/V PP High Voltage Delay 2 s

tOES OE/V PP Setup Time 2 s

tOEH OE/V PP Hold Time 2 s

tDS Data Setup Time 2 s

tDH Data Hold Time 2 s

tPW ALE Program Pulse Width(2) 47.5 52.5 s

tVR OE/V PP Recovery Time 2 s

tVCS VCC Setup Time 2 s

tOE Data Valid from OE/V PP 150 ns

tDFP OE/V PP High to Output Float Delay(4) 0 130 ns

tAS Address Setup Time 2 s

tAH Address Hold Time 0 s

tPRTOE/V PP Pulse Rise Time DuringProgramming 50 ns

Atmels 27LV520 Integrated Product Identification Code

Codes

PinsHexDataA8 AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0

Manufacturer 0 0 0 0 1 1 1 1 0 1E

Device Type 1 1 0 0 1 1 1 0 1 9D

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AT27LV5208

Rapid Programming AlgorithmA 50 s ALE pulse width is used to program. The addressis set to the first location. V CC is raised to 6.5V and OE/V PPis raised to 13.0V. Each address is first programmed withone 50 s ALE pulse without verification. Then a verifica-tion/reprogramming loop is executed for each address. In

the event a byte fails to pass verification, up to 10 succes-sive 50 s pulses are applied with a verification after each

pulse. If the byte fails to verify after 10 pulses have beenapplied, the part is considered failed. After the byte verifiesproperly, the next address is selected until all have beenchecked. OE/V PP is then lowered to V IH and V CC to 5.0V.All bytes are read again and compared with the originaldata to determine if the device passes or fails.

V = 5.0VCC

V = 6.5VCCV = 13.0VPP

ALL BYTESCOMPARE

DATATO ORIGINAL

PASSEDDEVICE

DEVICEFAILED

FAIL

PASS

ADDR = FIRST LOCATION

START

X = 0

PROGRAM ONE 50 S PULSE

INCREMENT X

YES

VERIFYBYTE

X = 10?

FAILPASS

ADDR = FIRST LOCATION

ADDR.?LAST

ADDRESSINCREMENT NO

YES

PROGRAM ONE 100 S PULSE NO

INCREMENTADDRESS

LASTADDR.?

YES

V = 5.0VPP

NO

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Ordering Information

tACC (ns)ICC (mA)

Active Ordering Code Package Operation Range

90 8 AT27LV520-90SCAT27LV520-90TC

AT27LV520-90XC

20S28T

20X

Commercial(0C to 70 C)

90 8 AT27LV520-90SIAT27LV520-90TIAT27LV520-90XI

20S28T20X

Industrial(-40C to +85C)

Package Type

20S 20-Lead, 0.300 Wide, Plastic Gull-Wing Small Outline (SOIC)

28T 28-Lead, Thin Small Outline Package (TSOP)

20X 20-Lead, 0.173 Wide, Thin Shrink Small Outline (TSSOP)

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AT27LV52010

Packaging Information

.299(7.60)

.291(7.39).420(10.7).393(9.98)

.050(1.27) BSC

.020(.508)

.013(.330)

PIN 1 ID

.513(13.0)

.497(12.6)

.012(.305)

.003(.076)

.105(2.67)

.092(2.34)

.013(.330)

.009(.229)

08

REF.035(0.889).015(.381)

4.48(.176)4.30(.169)

6.50(.256)6.25(.246)

0.65(.0256) BSC

0.30(0.012)0.18(0.007)

PIN ID

6.60(.260)6.40(.252)

0.15(.006)0.05(.002)

1.10(0.043) MAX

0.18(.007)0.09(.003)

08

REF0.70(.028)0.50(.020)

20S , 20-Lead, 0.300 Wide,Plastic Gull Wing Small OutlineDimensions in Inches and (Millimeters)

28T, 28-Lead, Plastic Thin Small Outline Package(TSOP)Dimensions in Millimeters and (Inches)

20X, 20-Lead, 0.173 Wide, Thin Super Small OutlinePackage (TSSOP)Dimensions in (Millimeters) and Inches

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