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A28F400BR-B Dataheets PDF



Part Number A28F400BR-B
Manufacturers Intel
Logo Intel
Description 4-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY
Datasheet A28F400BR-B DatasheetA28F400BR-B Datasheet (PDF)

E ADVANCE INFORMATION A28F400BR-T/B 4-MBIT (256K X 16, 512K X 8) SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY Automotive n Intel SmartVoltage Technology  5V or 12V Program/Erase  5V Read Operation n Very High Performance Read  80 ns Max. Access Time,  40 ns Max. Output Enable Time n Low Power Consumption  Maximum 60 mA Read Current at 5V n x8/x16-Selectable Input/Output Bus  High Performance 16- or 32-bit CPUs n Optimized Array Blocking Architecture  One 16-KB Protected Boot Block  Two.

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E ADVANCE INFORMATION A28F400BR-T/B 4-MBIT (256K X 16, 512K X 8) SmartVoltage BOOT BLOCK FLASH MEMORY FAMILY Automotive n Intel SmartVoltage Technology  5V or 12V Program/Erase  5V Read Operation n Very High Performance Read  80 ns Max. Access Time,  40 ns Max. Output Enable Time n Low Power Consumption  Maximum 60 mA Read Current at 5V n x8/x16-Selectable Input/Output Bus  High Performance 16- or 32-bit CPUs n Optimized Array Blocking Architecture  One 16-KB Protected Boot Block  Two 8-KB Parameter Blocks  One 96-KB Main Block  Three 128-KB Main Blocks  Top or Bottom Boot Locations n Hardware-Protection for Boot Block n Software EEPROM Emulation with Parameter Blocks n Automotive Temperature Operation  –40°C to +125°C n Extended Cycling Capability  30,000 Block Erase Cycles for Parameter Blocks  1,000 Block Erase Cycles for Main Blocks n Automated Word/Byte Program and Block Erase  Industry-Standard Command User Interface  Status Registers  Erase Suspend Capability n SRAM-Compatible Write Interface n Automatic Power Savings Feature  1 mA Typical ICC Active Current in Static Operation n Reset/Deep Power-Down Input  0.2 µA ICCTypical  Provides Reset for Boot Operations n Hardware Data Protection Feature  Write Lockout during Power Transitions n Industry-Standard Surface Mount Packaging  44-Lead PSOP: JEDEC ROM Compatible n ETOX™ IV Flash Technology December 1996 Order Number: 290538-005 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. *Third-party brands and names are the property of their respective owners. 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 7641 Mt. Prospect, IL 60056-7641 or call 1-800-879-4683 COPYRIGHT © INTEL CORPORATION, 1996 CG-041493 E CONTENTS A28F400BR-T/B PAGE 1.0 PRODUCT FAMILY OVERVIEW .................... 5 1.1 New Features in the SmartVoltage Products ..................................................... 5 1.2 Main Features.............................................. 5 1.3 Applications ................................................. 6 1.4 Pinouts......................................................... 6 1.5 Pin Descriptions........................................... 8 2.0 PRODUCT DESCRIPTION.............................. 9 2.1 Memory Blocking Organization .................... 9 2.1.1 Boot Block............................................. 9 2.1.2 Parameter Blocks................................ 10 2.1.3 Main Blocks......................................... 10 3.0 PRODUCT FAMILY PRINCIPLES OF OPERATION ................................................ 10 3.1 Bus Operations .......................................... 12 3.2 Read Operations........................................ 12 3.2.1 Read Array.......................................... 12 3.2.2 Intelligent Identifiers ............................ 12 3.3 Write Operations........................................ 12 3.3.1 Command User Interface .................... 12 3.3.2 Status Register ................................... 15 3.3.3 Program Mode .................................... 15 3.3.4 Erase Mode......................................... 17 PAGE 3.4 Boot Block Locking ....................................20 3.4.1 VPP = VIL for Complete Protection .......20 3.4.2 WP# = VIL for Boot Block Locking .......21 3.4.3 RP# = VHH or WP# = VIH for Boot Block Unlocking..................................21 3.5 Power Consumption...................................21 3.5.1 Active Power .......................................21 3.5.2 Automatic Power Savings....................21 3.5.3 Standby Power ....................................21 3.5.4 Deep Power-Down Mode.....................21 3.6 Power-Up Operation...................................22 3.6.1 RP# Connected To System Reset .......22 3.7 Power Supply Decoupling ..........................22 3.7.1 VPP Trace on Printed Circuit Boards....22 3.7.2 VCC, VPP and RP# Transitions .............22 4.0 ABSOLUTE MAXIMUM RATINGS.................


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