FLASH MEMORY. A28F400BR-T Datasheet

A28F400BR-T MEMORY. Datasheet pdf. Equivalent

A28F400BR-T Datasheet
Recommendation A28F400BR-T Datasheet
Part A28F400BR-T
Description 4-MBIT SmartVoltage BOOT BLOCK FLASH MEMORY
Feature A28F400BR-T; E ADVANCE INFORMATION A28F400BR-T/B 4-MBIT (256K X 16, 512K X 8) SmartVoltage BOOT BLOCK FLASH MEMO.
Manufacture Intel
Datasheet
Download A28F400BR-T Datasheet





Intel A28F400BR-T
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



Intel A28F400BR-T
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



Intel A28F400BR-T
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................23
5.0 OPERATING CONDITIONS ..........................23
5.1 VCC Voltage ...............................................23
5.2 DC Characteristics .....................................23
5.3 AC Characteristics .....................................28
APPENDIX A: Ordering Information .................35
APPENDIX B: Additional Information...............36
ADVANCE INFORMATION
3





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