Part Name
         Description
AM29LV081B_06

 8 Megabit (1 M x 8-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory ( 40 Page)


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21525D6 October 12, 2006
Am29LV081B
3
D A TA SH EE T
TABLE OF CONTENTS
Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . 5
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 6
Standard Products .................................................................... 6
Device Bus Operations . . . . . . . . . . . . . . . . . . . . . . 7
Table 1. Am29LV081B Device Bus Operations ................................7
Requirements for Reading Array Data ..................................... 7
Writing Commands/Command Sequences .............................. 7
Program and Erase Operation Status ...................................... 8
Standby Mode .......................................................................... 8
Automatic Sleep Mode ............................................................. 8
RESET#: Hardware Reset Pin ................................................. 8
Output Disable Mode ................................................................ 8
Table 2. Am29LV081B Sector Address Table ..................................9
Autoselect Mode ....................................................................... 9
Table 3. Am29LV081B Autoselect Codes (High Voltage Method) ....9
Sector Protection/Unprotection ............................................... 10
Temporary Sector Unprotect .................................................. 10
Hardware Data Protection ...................................................... 10
Figure 1. Temporary Sector Unprotect Operation........................... 10
Figure 2. In-System Sector Protect/Unprotect Algorithms .............. 11
Command Definitions . . . . . . . . . . . . . . . . . . . . . . 12
Reading Array Data ................................................................ 12
Reset Command ..................................................................... 12
Autoselect Command Sequence ............................................ 12
Byte Program Command Sequence ....................................... 12
Chip Erase Command Sequence ........................................... 13
Figure 3. Program Operation .......................................................... 13
Sector Erase Command Sequence ........................................ 13
Erase Suspend/Erase Resume Commands ........................... 14
Figure 4. Erase Operation............................................................... 15
Command Definitions ............................................................. 16
Table 4. Am29LV081B Command Definitions .................................16
Write Operation Status . . . . . . . . . . . . . . . . . . . . . 17
DQ7: Data# Polling ................................................................. 17
Figure 5. Data# Polling Algorithm ................................................... 17
RY/BY#: Ready/Busy# ............................................................ 18
DQ6: Toggle Bit I .................................................................... 18
DQ2: Toggle Bit II ................................................................... 18
Reading Toggle Bits DQ6/DQ2 ............................................... 18
Figure 6. Toggle Bit Algorithm......................................................... 19
DQ5: Exceeded Timing Limits ................................................ 19
DQ3: Sector Erase Timer ....................................................... 19
Table 5. Write Operation Status ..................................................... 20
Absolute Maximum Ratings . . . . . . . . . . . . . . . . 21
Figure 7. Maximum Negative Overshoot Waveform ....................... 21
Figure 8. Maximum Positive Overshoot Waveform......................... 21
Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 21
DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 9. ICC1 Current vs. Time (Showing Active
and Automatic Sleep Currents) ....................................................... 23
Figure 10. Typical ICC1 vs. Frequency ............................................ 23
Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 11. Test Setup...................................................................... 24
Table 6. Test Specifications ........................................................... 24
Figure 12. Input Waveforms and Measurement Levels .................. 24
AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 25
Read Operations .................................................................... 25
Figure 13. Read Operations Timings .............................................. 25
Hardware Reset (RESET#) .................................................... 26
Figure 14. RESET# Timings ........................................................... 26
Erase/Program Operations ..................................................... 27
Figure 15. Program Operation Timings........................................... 28
Figure 16. Chip/Sector Erase Operation Timings ........................... 29
Figure 17. Data# Polling Timings (During Embedded Algorithms).. 30
Figure 18. Toggle Bit Timings (During Embedded Algorithms)....... 30
Figure 19. DQ2 vs. DQ6.................................................................. 31
Figure 20. Temporary Sector Unprotect Timing Diagram ............... 31
Figure 21. Sector Protect/Unprotect Timing Diagram ..................... 32
Figure 22. Alternate CE# Controlled Write Operation Timings ....... 34
Erase and Programming Performance . . . . . . . 35
Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 35
TSOP Pin Capacitance . . . . . . . . . . . . . . . . . . . . . 35
Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 36



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