AM29LV081B-90EF 查看數據表（PDF） - Advanced Micro Devices

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AM29LV081B-90EF

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

Advanced Micro Devices 

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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

21525D6 October 12, 2006

Am29LV081B

3

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