View AT27LV520_974863.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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 A 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 RapidTM 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
Description
The AT27LV520 is a low-power, high-performance, 524,288-bit one-time programmable 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)
512K (64K x 8) Multiplexed Addresses/ Outputs Low-voltage OTP EPROM AT27LV520
Pin Configurations
Pin Name A8 - A15 AD0 - AD7 OE /VPP ALE Function Addresses Addresses/Outputs Output Enable/Program Supply Address Latch Enable
TSSOP Top View
A10 A12 A14 ALE VCC OE/VPP A15 A13 A11 A9 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 A8 AD1 AD3 AD5 AD7 GND AD6 AD4 AD2 AD0
SOIC Top View
OE/VPP A15 A13 A11 A9 AD0 AD2 AD4 AD6 GND 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC ALE A14 A12 A10 A8 AD1 AD3 AD5 AD7
Rev. 0911D-05/00
1
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 CC = 3.0V, any byte can be accessed in less than 70 ns. With a typical power dissipation of only 18 mW at 5 MHz and V C C = 3.3V, the AT27LV520 consumes less than one fifth the power of a standard 5V EPROM. Standby mode is achieved by asserting ALE high. Standby mode supply current is typically less than 1 A at 3.3V. The AT27LV520 operating with VCC at 3.0V produces TTL level outputs that are compatible with standard TTL logic devices operating at VCC = 5.0V. The device is also 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. Atmel's AT27LV520 has additional features to ensure high quality and efficient production use. The RapidTM Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programing time is typically only 50 s/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.
System Considerations
Switching under active conditions may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 F high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 F bulk electrolytic capacitor should be utilized, again connected between the V CC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.
Block Diagram
VCC GND OE/VPP ALE OE, ALE, AND PROGRAM LOGIC OUTPUT BUFFERS 8
LATCHES
Y DECODER
Y-GATING
AD7 - AD0
A15 - A8
8
X DECODER
CELL MATRIX
IDENTIFICATION
2
AT27LV520
AT27LV520
Absolute Maximum Ratings*
Temperature under Bias ................................ -55C to +125C Storage Temperature ..................................... -65C to +150C Voltage on Any Pin with Respect to Ground .........................................-2.0V to +7.0V(1) Voltage on A9 with Respect to Ground ......................................-2.0V to +14.0V(1) VPP Supply Voltage with Respect to Ground .......................................-2.0V to +14.0V(1) Note: 1. Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V DC which may overshoot to +7.0V for pulses of less than 20 ns. *NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Operating Modes
Mode/Pin Read
(2)
ALE VIL VIL/VIH VIH
(2)
OE/VPP VIL VIH VIH VIH VPP VIL
A8 - A15 Ai X(1) Ai X Ai A9 = VH(5) A8 = VIH or VIL A10 - A15 = VIL
AD0 - AD7 DOUT High Z/A0 - A7 A0 - A7 A0 - A7 DIN Identification Code
Output Disable(2) Standby Address Latch Enable Rapid Program
(3)
VIH VIH
Product Identification Notes:
(4)
VIL
1. X can be VIL or VIH. 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 (VIL), except A9 which is set to VH and A8 which is toggled low (VIL) to select the Manufacturer's Identification byte and high (VIH) to select the Device Code byte.
3
DC and AC Operating Conditions for Read Operation
AT27LV520-70 Com. Operating Temp. (Case) Ind. VCC Supply -40C - +85C 3.0V to 3.6V 5V =10% -40C - +85C 3.0V to 3.6V 5V =10% 0C - 70C AT27LV520-90 0C - 70C
DC and Operating Characteristics for Read Operation
Symbol Parameter Condition Min Max Units VCC = 3.0V to 3.6V ILI ILO ISB ICC VIL VIH VOL VOH
(1)
Input Load Current Output Leakage Current VCC Standby Current VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage
VIN = 0V to VCC VOUT = 0V to VCC ALE = VCC 0.3V; Ai, ADi = GND/VCC 0.3V f = 5 MHz, IOUT = 0 mA, ALE = VIL -0.6 2.0 IOL = 2.0 mA IOH = -2.0 mA 2.4
1 5 20 8 0.8 VCC + 0.5 0.4
A A A mA V V V V
VCC = 4.5V to 5.5V ILI ILO ISB ICC VIL VIH VOL VOH Note:
(1)
Input Load Current Output Leakage Current VCC Standby Current VCC Active Current Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage
VIN = 0V to VCC VOUT = 0V to VCC ALE = VCC 0.3V; Ai, ADi = GND/VCC 0.3V f = 5 MHz, IOUT = 0 mA, ALE = VIL -0.6 2.0 IOL = 2.1 mA IOH = -400 A 2.4
1 5 100 20 0.8 VCC + 0.5 0.4
A A A mA V V V
1. VCC standby current will be slightly higher with ALE, Ai, and ADi at TTL levels.
4
AT27LV520
AT27LV520
AC Characteristics for Read Operation
VCC = 3.0V to 3.6V and 4.5V to 5.5V
AT27LV520-70 Symbol tACC tCE tAS tAH tALE tOE(3) tDF(4)(5) tOH Note:
(3)
AT27LV520-90 Min Max 90 70 15 15 45 Units ns ns ns ns ns 35 25 0 ns ns ns
Parameter Address to Output Delay Address Latch Enable Low to Output Delay Address Setup Time Address Hold Time Address Latch Enable Width OE/VPP to Output Delay OE/VPP High to Output Float Output Hold from Address or OE/VPP, whichever occurred first
Condition ALE = OE/VPP = VIL Address Valid OE/VPP = VIH OE/VPP = VIH OE/VPP = VIH ALE = VIL ALE = VIL ALE = VIL
Min
Max 70 55
12 12 40 30 25 7
3, 4, 5 -- see AC Waveforms for Read Operation
AC Waveforms for Read Operation(1)
tALE ALE tCE OE/VPP tDF tAS AD7 - AD0 ADDRESS IN tACC A15 - A8
Notes: 1. Timing measurement reference levels for all speed grades are VOL = 0.8V and VOH = 2.0V. Input AC drive levels are VIL = 0.45V and VIH = 2.4V. 2. OE/VPP may be delayed up to tCE - tOE after the address is valid without impact on tCE. 3. OE/VPP may be delayed up to tACC - tOE after the address is valid without impact on tACC. 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.
tAH
tOE
tOH DATA OUT
5
Input Test Waveforms and Measurement Levels
Output Test Load
tR, tF < 20 ns (10% to 90%) Note: CL = 100 pF including jig capacitance.
Pin Capacitance
f = 1 MHz, T = 25C(1)
Symbol CIN COUT Note: Typ 4 8 Max 6 12 Units pF pF Conditions VIN = 0V VOUT = 0V
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
6
AT27LV520
AT27LV520
Programming Waveforms
PROGRAM VCC 6.5V 5.0V tVCS 13V OE/VPP VIH VIL tPRT ALE VIH VIL tLP tALE tLAS ADDR tAS A15 - A8 VIH VIL ADDRESS STABLE tLAH tPW tDS DATA IN tDH tALE tOE AD7 - AD0 VIH VIL tLAS ADDR tLAH DATA OUT tAH tDFP tOES tOEH tVR READ (VERIFY)
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.
DC Programming Characteristics
TA = 25 5C, VCC = 6.5 0.25V, OE/VPP = 13.0 0.25V
Limits Symbol ILI VIL VIH VOL VOH ICC2 IPP2 Parameter Input Load Current Input Low Level Input High Level Output Low Voltage Output High Voltage VCC Supply Current (Program and Verify) OE/VPP Current ALE = VIH IOL = 2.1 mA IOH = -400 A 2.4 25 25 Test Conditions VIN = VIL, VIH -0.6 2.0 Min Max 10 0.8 VCC + 1.0 0.4 Units A V V V V mA mA
7
AC Programming Characteristics
TA = 25 5C, VCC = 6.5 0.25V, OE/VPP = 13.0 0.25V
Limits Symbol tALE tLAS tLAH tLP tOES tOEH tDS tDH tPW tVR tVCS tOE tDFP tAS tAH tPRT Notes: Parameter
(1)
Test Conditions
Min 500 100 100 2
Max
Units ns ns ns s s s s s
Address Latch Enable Width Latched Address Setup Time Latched Address Hold Time ALE Low to OE/VPP High Voltage Delay OE/VPP Setup Time OE/VPP Hold Time Data Setup Time Data Hold Time ALE Program Pulse Width OE/VPP Recovery Time VCC Setup Time Data Valid from OE/VPP OE/VPP High to Output Float Delay Address Setup Time Address Hold Time OE/VPP Pulse Rise Time During Programming 2. Program Pulse width tolerance is 50=sec==5%.
(3) (2)
Input Rise and Fall Times: (10% to 90%) 20 ns Input Pulse Levels: 0.45V to 2.4V Input Timing Reference Level: 0.8V to 2.0V Output Timing Reference Level: 0.8V to 2.0V
2 2 2 2 47.5 2 2 150 0 2 0 50 130 52.5
s s s ns ns s s ns
1. VCC must be applied simultaneously or before OE/VPP and removed simultaneously or after OE/VPP. 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.
Atmel's 27LV520 Integrated Product Identification Code
Pins Codes Manufacturer Device Type Note: A8 0 1 AD7 0 1 AD6 0 0 AD5 0 0 AD4 1 1 AD3 1 1 AD2 1 1 AD1 1 0 AD0 0 1 Hex Data 1E 9D
1. The AT27LV520 has the same product identification code as the AT27C520. Both are programming compatible.
8
AT27LV520
AT27LV520
RapidTM Programming Algorithm
A 50 s ALE pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and OE/VPP is raised to 13.0V. Each address is first programmed with one 50 s ALE 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 50 s pulses are applied with a verification after each pulse. If the byte fails to verify after 10 pulses have been applied, the part is considered failed. After the byte verifies properly, the next address is selected until all have been checked. OE/VPP is then lowered to VIH and VCC to 5.0V. All bytes are read again and compared with the original data to determine if the device passes or fails.
START
ADDR = FIRST LOCATION
VCC = 6.5V VPP = 13.0V
PROGRAM ONE 50 S PULSE
INCREMENT ADDRESS
NO
LAST ADDR.?
YES ADDR = FIRST LOCATION INCREMENT ADDRESS NO LAST ADDR.? YES PROGRAM ONE 50 S PULSE NO X = 10? PASS VERIFY BYTE FAIL INCREMENT X X=0
VCC = 5.0V VPP = 5.0V
YES
COMPARE ALL BYTES TO ORIGINAL DATA PASS DEVICE PASSED
FAIL
DEVICE FAILED
9
Ordering Information
tACC (ns) 90 ICC (mA) Active 8 Ordering Code AT27LV520-90SC AT27LV520-90XC AT27LV520-90SI AT27LV520-90XI 70 8 AT27LV520-70SC AT27LV520-70XC AT27LV520-70SI AT27LV520-70XI Package 20S 20X 20S 20X 20S 20X 20S 20X Operation Range Commercial (0C to 70C) Industrial (-40C to +85C) Commercial (0C to 70C) Industrial (-40C to +85C)
Package Type 20S 20X 20-lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC) 20-lead, 0.173" Wide, Thin Shrink Small Outline (TSSOP)
10
AT27LV520
AT27LV520
Packaging Information
20S, 20-lead, 0.300" Wide, Plastic Gull Wing Small Outline Dimensions in Inches and (Millimeters) 20X, 20-lead, 0.173" Wide, Thin Super Small Outline Package (TSSOP) Dimensions in (Millimeters) and Inches
0.020 (0.508) 0.013 (0.330)
0.30(0.012) 0.18(0.007)
0.299 (7.60) 0.420 (10.7) 0.291 (7.39) 0.393 (9.98) PIN 1
4.48(.176) 6.50(.256) 4.30(.169) 6.25(.246) PIN 1 ID
.050 (1.27) BSC
0.65(.0256) BSC 6.60(.260) 6.40(.252)
0.513 (13.0) 0.497 (12.6)
0.105 (2.67) 0.092 (2.34)
1.10(0.043) MAX
0.012 (0.305) 0.003 (0.076)
0.15(.006) 0.05(.002)
0 REF 8
0.013 (0.330) 0.009 (0.229)
0.18(.007) 0.09(.003) 0 REF 8 0.70(.028) 0.50(.020)
0.035 (0.889) 0.015 (0.381)
11
Atmel Headquarters
Corporate Headquarters
2325 Orchard Parkway San Jose, CA 95131 TEL (408) 441-0311 FAX (408) 487-2600
Atmel Operations
Atmel Colorado Springs
1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL (719) 576-3300 FAX (719) 540-1759
Europe
Atmel U.K., Ltd. Coliseum Business Centre Riverside Way Camberley, Surrey GU15 3YL England TEL (44) 1276-686-677 FAX (44) 1276-686-697
Atmel Rousset
Zone Industrielle 13106 Rousset Cedex France TEL (33) 4-4253-6000 FAX (33) 4-4253-6001
Asia
Atmel Asia, Ltd. Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369
Japan
Atmel Japan K.K. 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581
Fax-on-Demand
North America: 1-(800) 292-8635 International: 1-(408) 441-0732
e-mail
literature@atmel.com
Web Site
http://www.atmel.com
BBS
1-(408) 436-4309
(c) Atmel Corporation 2000. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life suppor t devices or systems. Marks bearing
(R)
and/or
TM
are registered trademarks and trademarks of Atmel Corporation. Printed on recycled paper.
0911D-05/00/xM
Terms and product names in this document may be trademarks of others.

▲Up To Search▲

Price & Availability of AT27LV520

	To Download AT27LV520 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .