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28F002BC

2-MBIT (256K X 8) BOOT BLOCK FLASH MEMORY

Intel 

E

28F002BC 2-MBIT BOOT BLOCK FLASH MEMORY

CONTENTS

PAGE

1.0 INTRODUCTION .............................................5

1.1 Designing for Density Upgradeability............5

1.2 Main Features ..............................................5

1.3 Applications..................................................6

1.4 Pinouts.........................................................7

1.5 Pin Descriptions .........................................10

2.0 PRODUCT DESCRIPTION............................11

2.1 Memory Organization.................................12

2.1.1 Blocking...............................................12

2.1.2 28F002BC-T Block Memory Map.........12

3.0 PRINCIPLES OF OPERATION .....................12

3.1 Bus Operations ..........................................13

3.2 Read Operations ........................................13

3.2.1 Read Array ..........................................13

3.2.2 Intelligent Identifiers ............................14

3.3 Write Operations ........................................14

3.3.1 Command User Interface (CUI) ...........14

3.3.2 Status Register....................................17

3.3.3 Program Mode.....................................17

3.3.4 Erase Mode .........................................18

3.3.5 Extended Cycling ................................19

PAGE

3.4 Boot Block Locking.....................................19

3.4.1 VPP = VIL for Complete Protection........19

3.4.2 RP# = VHH for Boot Block Unlocking....19

3.5 Power Consumption ...................................23

3.5.1 Active Power .......................................23

3.5.2 Standby Power ....................................23

3.5.3 Deep Power-Down...............................23

3.6 Power-Up/Down Operation.........................23

3.6.1 RP# Connected to System Reset ........23

3.6.2 VCC, VPP and RP# Transitions .............23

3.7 Power Supply Decoupling ..........................24

3.7.1 VPP Trace on Printed Circuit Boards ....24

4.0 ELECTRICAL SPECIFICATIONS..................25

4.1 Absolute Maximum Ratings........................25

4.2 Operating Conditions..................................25

4.2.1 Capacitance.........................................26

4.2.2 Input/Output Test Conditions ...............26

4.2.3 DC Characteristics...............................27

4.2.4 AC Characteristics ...............................29

APPENDIX A: Ordering Information .................35

APPENDIX B:WSM Transition Table.................36

APPENDIX C: Additional Information ...............37

PRELIMINARY

3

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