AT27LV520-90 ATMEL Corporation, AT27LV520-90 Datasheet

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AT27LV520-90

Manufacturer Part Number
AT27LV520-90
Description
512K 64K x 8 Multiplexed Addresses/ Outputs Low Voltage OTP EPROM
Manufacturer
ATMEL Corporation
Datasheet

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Features
Description
The 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 latches
for 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. 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 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.
Pin Configurations
Pin Name
A8 - A15
AD0 - AD7
OE /V
ALE
8-Bit Multiplexed Addresses/Outputs
Fast Read Access Time - 90 ns
Dual Voltage Range Operation
Low Power CMOS Operation
20-Lead TSSOP Package
High Reliability CMOS Technology
Rapid
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial and Industrial Temperature Range
– Low-Voltage Power Supply Range, 3.0V to 3.6V, or
– Standard 5V
– 20 A max. Standby for ALE = V
– 29 mW max. Active at 5 MHz for V
– 2,000V ESD Protection
– 200 mA Latchup Immunity
– JEDEC Standard for LVTTL
OE/VPP
PP
VCC
ALE
A10
A12
A14
A15
A13
A11
NC
NC
NC
NC
A9
Programming Algorithm - 50 s/byte (typical)
22
23
24
25
26
27
2
3
4
5
6
7
28
1
Function
Addresses
Addresses/Outputs
Output Enable/V
Address Latch Enable
TSOP Top View
10% Supply Range
PP
21
20
19
18
17
16
15
14
13
12
11
10
IH
9
8
CC
and V
A8
NC
NC
AD1
AD3
AD5
AD7
GND
AD6
AD4
AD2
NC
NC
AD0
= 3.6V
CC
= 3.6V
OE/VPP
OE/VPP
GND
VCC
AD0
AD2
AD4
AD6
ALE
A15
A13
A11
A10
A12
A14
A15
A13
A11
A9
A9
TSSOP Top View
SOIC Top View
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
20
19
18
17
16
15
14
13
12
11
A8
AD1
AD3
AD5
AD7
GND
AD6
AD4
AD2
AD0
VCC
ALE
A14
A12
A10
A8
AD1
AD3
AD5
AD7
(continued)
512K (64K x 8)
Multiplexed
Addresses/
Outputs
Low Voltage
OTP EPROM
AT27LV520
Rev. 0911B-B–01/98
1

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AT27LV520-90 Summary of contents

Page 1

... Any byte can be 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. Pin Configurations ...

Page 2

... CC accessed in less than 90 ns. With a typical power dissipa- tion of only MHz and V AT27LV520 consumes less than one fifth the power of a standard 5V EPROM. Standby mode is acheived by assert- ing ALE high. Standby mode supply current is typically less than 3.3V. ...

Page 3

Absolute Maximum Ratings* Temperature Under Bias ................................ -55°C to +125°C Storage Temperature ..................................... -65°C to +150°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 V ...

Page 4

... OUT 2 -400 whichever occurred first PP AT27LV520-90 0°C - 70°C -40°C - +85°C 3.0V to 3.6V 5V 10% Min 0.3V -0.6 2 2.4 0.3V -0.6 2 2.4 AT27LV520-90 Condition Min ALE = OE Address Valid ALE = V IL ALE = V IL ALE = Max Units ...

Page 5

AC Waveforms for Read Operation ALE OE/V PP AD7 - AD0 A15 - A8 Notes: 1. Timing measurement reference levels for all speed grades are V 0.45V and V = 2.4V OE/V may be delayed ...

Page 6

... IL V Input High Level IH V Output Low Voltage OL V Output High Voltage Supply Current (Program and Verify) CC2 CC I OE/V Current PP2 PP AT27LV520 6 PROGRAM tVCS tPRT tOES tOEH tLP tPW tLAH tDS tDH ADDR DATA IN tAS ADDRESS STABLE and 2.0V for ...

Page 7

AC Programming Characteristics 6.5 0.25V, OE (1) Symbol Parameter t Address Latch Enable Width ALE t Latched Address Setup Time LAS t Latched Address Hold Time LAH t ALE Low to ...

Page 8

... In the event a byte fails to pass verification succes- sive 50 s pulses are applied with a verification after each AT27LV520 8 pulse. If the byte fails to verify after 10 pulses have been applied, the part is considered failed. After the byte verifies ...

Page 9

... Thin Small Outline Package (TSOP) 20X 20-Lead, 0.173” Wide, Thin Shrink Small Outline (TSSOP) Ordering Code Package AT27LV520-90SC 20S AT27LV520-90TC 28T AT27LV520-90XC 20X AT27LV520-90SI 20S AT27LV520-90TI 28T AT27LV520-90XI 20X Package Type Operation Range Commercial ( Industrial (-40°C to +85°C) 9 ...

Page 10

... PIN 1 ID 0.65(.0256) BSC 6.60(.260) 6.40(.252) 0.15(.006) 0.05(.002) 0.70(.028) 0 REF 0.50(.020) 8 AT27LV520 10 28T, 28-Lead, Plastic Thin Small Outline Package (TSOP) Dimensions in Millimeters and (Inches) .299(7.60) .420(10.7) .291(7.39) .393(9.98) .105(2.67) .092(2.34) .013(.330) .009(.229) 6.50(.256) 6.25(.246) 1.10(0.043) MAX ...

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