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Details, datasheet, quote on part number:P28F020-120
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Datasheet text preview:
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12.0 V ±5% VPP
28F020 2048K (256K X 8) CMOS FLASH MEMORY
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Command Register Architecture for Microprocessor/Microcontroller Compatible Write Interface Noise Immunity Features ±10% VCC Tolerance Maximum Latch-Up Immunity through EPI Processing ETOXTM Nonvolatile Flash Technology EPROM-Compatible Process Base High-Volume Manufacturing Experience JEDEC-Standard Pinouts 32-Pin Plastic Dip 32-Lead PLCC 32-Lead TSOP
(See Packaging Spec., Order #231369)
Flash Electrical Chip-Erase 2 Second Typical Chip-Erase Quick-Pulse Programming Algorithm 10 µS Typical Byte-Program 4 second Chip-Program 100,000 Erase/Program Cycles High-Performance Read 90 ns Maximum Access Time CMOS Low Power Consumption 10 mA Typical Active Current 50 µA Typical Standby Current 0 Watts Data Retention Power Integrated Program/Erase Stop Timer
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Extended Temperature Options
Intel's 28F020 CMOS flash memory offers the most cost-effective and reliable alternative for read/write random access nonvolatile memory. The 28F020 adds electrical chip-erasure and reprogramming to familiar EPROM technology. Memory contents can be rewritten: in a test socket; in a PROM-programmer socket; onboard during subassembly test; in-system during final test; and in-system after sale. The 28F020 increases memory flexibility, while contributing to time and cost savings. The 28F020 is a 2048-kilobit nonvolatile memory organized as 262,144 bytes of eight bits. Intel's 28F020 is offered in 32-pin plastic DIP, 32-lead PLCC, and 32-lead TSOP packages. Pin assignments conform to JEDEC standards for byte-wide EPROMs. Extended erase and program cycling capability is designed into Intel's ETOXTM (EPROM Tunnel Oxide) process technology. Advanced oxide processing, an optimized tunneling structure, and lower electric field combine to extend reliable cycling beyond that of traditional EEPROMs. With the 12.0 V VPP supply, the 28F020 performs 100,000 erase and program cycles--well within the time limits of the quick-pulse programming and quick-erase algorithms. Intel's 28F020 employs advanced CMOS circuitry for systems requiring high-performance access speeds, low power consumption, and immunity to noise. Its 90 ns access time provides zero wait-state performance for a wide range of microprocessors and microcontrollers. Maximum standby current of 100 µA translates into power savings when the device is deselected. Finally, the highest degree of latch-up protection is achieved through Intel's unique EPI processing. Prevention of latch-up is provided for stresses up to 100 mA on address and data pins, from 1 V to VCC + 1 V. With Intel's ETOX process technology base, the 28F020 builds on years of EPROM experience to yield the highest levels of quality, reliability, and cost-effectiveness.
December 1997
Order Number: 290245-009
Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and product descriptions at any time, without notice. The 28F020 may contain design defects or errors known as errata. Current characterized errata are available on request. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from: Intel Corporation P.O. Box 5937 Denver, CO 80217-9808 or call 1-800-548-4725 or visit Intel's website at http://www.intel.com Copyright © Intel Corporation 1996, 1997. * Third-party brands and names are the property of their respective owners.
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28F020
CONTENTS
PAGE PAGE 4.0 ELECTRICAL SPECIFICATIONS.........18 4.1 Absolute Maximum Ratings ......18 4.2 Operating Conditions..........18 4.3 Capacitance .....18 4.4 DC Characteristics--TTL/NMOS Compatible--Commercial Products..19 4.5 DC Characteristics--CMOS Compatible-- Commercial Products ........20 4.6 DC Characteristics--TTL/NMOS Compatible--Extended Temperature Products .... 22 4.7 DC Characteristics--CMOS Compatible-- Extended Temperature Products ......24 4.8 AC Characteristics--Read Only Operations--Commercial and Extended Temperature Products.......28 4.9 AC Characteristics--Write/Erase/Program Only Operations--Commercial and Extended Temperature Products ......30 4.10 Erase and Programming Performance.....31 4.11 AC Characteristics--Alternate CE# Controlled Writes--Commercial and Extended Temperature Products ......35 5.0 ORDERING INFORMATION.......38 6.0 ADDITIONAL INFORMATION ....38
1.0 APPLICATIONS .... 5 2.0 PRINCIPLES OF OPERATION ..... 8 2.1 Integrated Stop Timer .......... 8 2.2 Write Protection .......... 9 2.2.1 Bus Operations.....9 2.2.1.1 Read.....9 2.2.1.2 Output Disable ...... 10 2.2.1.3 Standby ....... 10 2.2.1.4 Intelligent Identifier Operation ....... 10 2.2.1.5 Write ............ 10 2.2.2 Command Definitions .. 10 2.2.2.1 Read Command....11 2.2.2.2 Intelligent Identifier Command ...... 11 2.2.2.3 Set-Up Erase/Erase Commands...12 2.2.2.4 Erase Verify Command........12 2.2.2.5 Set-Up Program/Program Commands .......... 12 2.2.2.6 Program Verify Command ... 12 2.2.2.7 Reset Command...13 2.2.3 Extended Erase/Program Cycling........13 2.2.4 Quick-Pulse Programming Algorithm ... 13 2.2.5 Quick-Erase Algorithm.......13 3.0 DESIGN CONSIDERATIONS ...... 16 3.1 Two-Line Output Control .... 16 3.2 Power Supply Decoupling .. 16 3.3 VPP Trace on Printed Circuit Boards..16 3.4 Power-Up/Down Protection ...... 16 3.5 28F020 Power Dissipation ....... 16
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