AM29F004B AMD [Advanced Micro Devices], AM29F004B Datasheet - Page 5

• Manufacturer Part Number: AM29F004B
• Description: 4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
• Manufacturer: AMD [Advanced Micro Devices]

TABLE OF CONTENTS
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 7
Device Bus Operations . . . . . . . . . . . . . . . . . . . . . . 8
Command Definitions . . . . . . . . . . . . . . . . . . . . . . 13
Write Operation Status . . . . . . . . . . . . . . . . . . . . . 17
8/5/05
Requirements for Reading Array Data ..................................... 8
Writing Commands/Command Sequences .............................. 8
Program and Erase Operation Status ...................................... 8
Standby Mode .......................................................................... 8
Output Disable Mode ................................................................ 9
Autoselect Mode ..................................................................... 10
Sector Protection/Unprotection ............................................... 10
Temporary Sector Unprotect .................................................. 12
Hardware Data Protection ...................................................... 13
Reading Array Data ................................................................ 13
Reset Command ..................................................................... 13
Autoselect Command Sequence ............................................ 13
Byte Program Command Sequence ....................................... 13
Chip Erase Command Sequence ........................................... 14
Sector Erase Command Sequence ........................................ 14
Erase Suspend/Erase Resume Commands ........................... 15
DQ7: Data# Polling ................................................................. 17
Am29F004B Device Bus Operations ................................................8
Am29F004B Top Boot Block Sector Addresses ...............................9
Am29F004B Bottom Boot Block Sector Addresses ..........................9
Am29F004B Autoselect Codes (High Voltage Method) ..................10
In-System Sector Protect/Sector Unprotect Algorithms ..................11
Temporary Sector Unprotect Operation ..........................................12
Low V
Write Pulse Glitch Protection ..........................................................13
Logical Inhibit ..................................................................................13
Power-Up Write Inhibit ....................................................................13
Program Operation ..........................................................................14
Erase Operation ..............................................................................15
Am29F004B Command Definitions .................................................16
Data# Polling Algorithm ...................................................................17
CC
Write Inhibit ......................................................................13
A D V A N C E
Am29F004B
I N F O R M A T I O N
Absolute Maximum Ratings . . . . . . . . . . . . . . . . 20
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . 20
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 21
Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Key to Switching Waveforms . . . . . . . . . . . . . . . 23
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24
Erase and Programming Performance . . . . . . . 32
Latchup Characteristics . . . . . . . . . . . . . . . . . . . 32
PLCC Pin Capacitance . . . . . . . . . . . . . . . . . . . . 32
Data Retention . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 33
Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 34
DQ6: Toggle Bit I .................................................................... 18
DQ2: Toggle Bit II ................................................................... 18
Reading Toggle Bits DQ6/DQ2 ............................................... 18
DQ5: Exceeded Timing Limits ................................................ 18
DQ3: Sector Erase Timer ....................................................... 18
TTL/NMOS Compatible .......................................................... 21
CMOS Compatible .................................................................. 22
Read Operations .................................................................... 24
Erase/Program Operations ..................................................... 25
Alternate CE# Controlled Erase/Program Operations ............ 30
PL 032—32-Pin Plastic Leaded Chip Carrier ......................... 33
Toggle Bit Algorithm ....................................................................... 19
Write Operation Status ................................................................... 19
Maximum Negative Overshoot Waveform ..................................... 20
Maximum Positive Overshoot Waveform ....................................... 20
Test Setup ...................................................................................... 23
Test Specifications ......................................................................... 23
Read Operations Timings .............................................................. 24
Program Operation Timings ........................................................... 26
Chip/Sector Erase Operation Timings ............................................ 26
Data# Polling Timings (During Embedded Algorithms) .................. 27
Toggle Bit Timings (During Embedded Algorithms) ....................... 27
DQ2 vs. DQ6.................................................................................. 27
Sector Unlock Sequence Timing Diagram ..................................... 28
Sector Relock Timing Diagram ...................................................... 28
Sector Protect/Unprotect Timing Diagram ..................................... 29
Alternate CE# Controlled Write Operation Timings ........................ 31
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