E
28F160C18
3
ADVANCE INFORMATION
CONTENTS
PAGE
PAGE
1. 0 INTRODUCTION.............................................5
1.1 1.8 Volt Advanced+ Boot Block Flash
Memory Enhancements...............................5
1.2 Product Overview.........................................6
2. 0 PRODUCT DESCRIPTION.............................6
2.1 Package Pinouts..........................................7
2.2 Block Organization.......................................9
2.2.1 Parameter Blocks.................................9
2.2.2 Main Blocks..........................................9
3. 0 PRINCIPLES OF OPERATION.......................9
3.1 Bus Operation..............................................9
3.1.1 Read...................................................10
3.1.2 Output Disable....................................10
3.1.3 Standby..............................................10
3.1.4 Reset..................................................10
3.1.5 Write...................................................11
3.2 Modes of Operation....................................11
3.2.1 Read Array.........................................11
3.2.2 Read Configuration.............................12
3.2.3 Read Status Register .........................12
3.2.3.1Clearing the Status Register..........12
3.2.4 Read Query........................................12
3.2.5 Program Mode....................................12
3.2.5.1Suspending and Resuming
Program.......................................13
3.2.6 Erase Mode........................................13
3.2.6.1Suspending and Resuming Erase..13
3.3 Flexible Block Locking ...............................19
3.3.1 Locking Operation ..............................19
3.3.2 Locked State ......................................19
3.3.3 Unlocked State...................................19
3.3.4 Lock-Down State................................19
3.3.5
Reading a Block’s Lock Status ...........20
3.3.6 Locking Operations During Erase
Suspend ............................................ 20
3.3.7 Status Register Error Checking.......... 20
3.4 128-Bit Protection Register........................ 21
3.4.1 Reading the Protection Register........ 21
3.4.2 Programming the Protection Register 21
3.4.3 Locking the Protection Register......... 22
3.5 V
PP
Program and Erase Voltages.............. 22
3.5.1 Improved 12 Volt Production
Programming..................................... 22
3.5.2 V
PP
≤
V
PPLK
For Complete Protection 22
3.6 Power Consumption.................................. 23
3.6.1 Active Power (Program/Erase/Read). 23
3.6.2 Automatic Power Savings (APS)........ 23
3.6.3 Standby Power .................................. 23
3.7 Power-Up/Down Operation........................ 24
3.7.1 RST# Connected To System Reset... 24
3.7.2 V
CC
, V
PP
and RST# Transitions......... 24
3.8 Power Supply Decoupling ......................... 24
4. 0 ELECTRICAL SPECIFICATIONS................ 25
4.1 Absolute Maximum Ratings....................... 25
4.2 Operating Conditions................................. 25
4.3 Capacitance.............................................. 26
4.4 DC Characteristics .................................... 26
4.5 AC Characteristics—Read Operations—
Extended Temperature............................. 30
4.6 AC Characteristics—Write Operations—
Extended Temperature............................. 32
4.7 Erase and Program Timings...................... 33
4.8 Reset Operations ...................................... 35
5.0 ORDERING INFORMATION........................ 36
6.0 ADDITIONAL INFORMATION..................... 37