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AM29LV004B Datasheet(PDF) 5 Page - Advanced Micro Devices

Part No. AM29LV004B
Description  4 Megabit (512 K x 8-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
Download  39 Pages
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Maker  AMD [Advanced Micro Devices]
Homepage  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM29LV004B Datasheet(HTML) 5 Page - Advanced Micro Devices

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21522D5 October 11, 2006
Am29LV004B
5
D A TA SH EE T
TABLE OF CONTENTS
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 6
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 8
Device Bus Operations . . . . . . . . . . . . . . . . . . . . . . 9
Table 1. Am29LV004B Device Bus Operations ................................ 9
Requirements for Reading Array Data ..................................... 9
Writing Commands/Command Sequences .............................. 9
Program and Erase Operation Status .................................... 10
Standby Mode ........................................................................ 10
Automatic Sleep Mode ........................................................... 10
RESET#: Hardware Reset Pin ............................................... 10
Output Disable Mode .............................................................. 10
Table 2. Am29LV004BT Top Boot Block Sector Address Table..... 11
Table 3. Am29LV004BB Bottom Boot Block Sector Address Table 11
Autoselect Mode ..................................................................... 12
Table 4. Am29LV004B Autoselect Codes (High Voltage Method).. 12
Sector Protection/Unprotection ............................................... 12
Temporary Sector Unprotect .................................................. 12
Figure 1. In-System Sector Protect/Unprotect Algorithms ...............13
Figure 2. Temporary Sector Unprotect Operation ...........................14
Hardware Data Protection ...................................................... 14
Low VCC Write Inhibit .............................................................. 14
Write Pulse “Glitch” Protection ............................................... 14
Logical Inhibit .......................................................................... 14
Power-Up Write Inhibit ............................................................ 14
Command Definitions . . . . . . . . . . . . . . . . . . . . . 14
Reading Array Data ................................................................ 14
Reset Command ..................................................................... 15
Autoselect Command Sequence ............................................ 15
Byte Program Command Sequence ....................................... 15
Unlock Bypass Command Sequence ..................................... 15
Figure 3. Program Operation ..........................................................16
Chip Erase Command Sequence ........................................... 16
Sector Erase Command Sequence ........................................ 16
Erase Suspend/Erase Resume Commands ........................... 17
Figure 4. Erase Operation ...............................................................17
Command Definitions ............................................................. 18
Table 5. Am29LV004B Command Definitions................................. 18
Write Operation Status . . . . . . . . . . . . . . . . . . . . . 19
DQ7: Data# Polling ................................................................. 19
Figure 5. Data# Polling Algorithm ...................................................19
RY/BY#: Ready/Busy# ............................................................ 20
DQ6: Toggle Bit I .................................................................... 20
DQ2: Toggle Bit II ................................................................... 20
Reading Toggle Bits DQ6/DQ2 ............................................... 20
DQ5: Exceeded Timing Limits ................................................ 21
DQ3: Sector Erase Timer ....................................................... 21
Figure 6. Toggle Bit Algorithm ........................................................ 21
Table 6. Write Operation Status..................................................... 22
Absolute Maximum Ratings . . . . . . . . . . . . . . . . 23
Figure 7. Maximum Negative Overshoot Waveform ...................... 23
Figure 8. Maximum Positive Overshoot Waveform ........................ 23
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 23
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 9. ICC1 Current vs. Time (Showing Active and Automatic
Sleep Currents) .............................................................................. 25
Figure 10. Typical ICC1 vs. Frequency ........................................... 25
Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 11. Test Setup ..................................................................... 26
Table 7. Test Specifications ........................................................... 26
Key to Switching Waveforms. . . . . . . . . . . . . . . . 26
Figure 12. Input Waveforms and Measurement Levels ................. 26
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 27
Read Operations .................................................................... 27
Figure 13. Read Operations Timings ............................................. 27
Hardware Reset (RESET#) .................................................... 28
Figure 14. RESET# Timings .......................................................... 28
Erase/Program Operations ..................................................... 29
Figure 15. Program Operation Timings .......................................... 30
Figure 16. Chip/Sector Erase Operation Timings .......................... 31
Figure 17. Data# Polling Timings (During Embedded Algorithms) . 32
Figure 18. Toggle Bit Timings (During Embedded Algorithms) ...... 32
Figure 19. DQ2 vs. DQ6 ................................................................. 33
Temporary Sector Unprotect .................................................. 33
Figure 20. Temporary Sector Unprotect Timing Diagram .............. 33
Figure 21. Sector Protect/Unprotect Timing Diagram .................... 34
Alternate CE# Controlled Erase/Program Operations ............ 35
Figure 22. Alternate CE# Controlled Write Operation Timings ...... 36
Erase and Programming Performance . . . . . . . 37
Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 37
TSOP and SO Pin Capacitance . . . . . . . . . . . . . . 37
Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 38
TS 040—40-Pin Standard TSOP ............................................ 38
Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 39


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