E
28F002BC 2-MBIT BOOT BLOCK FLASH MEMORY
3
PRELIMINARY
CONTENTS
PAGE
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
3.4 Boot Block Locking.....................................19
3.4.1 V
PP
= V
IL
for Complete Protection........19
3.4.2 RP# = V
HH
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 V
CC
, V
PP
and RP# Transitions.............23
3.7 Power Supply Decoupling ..........................24
3.7.1 V
PP
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