AM29F040B-1 查看數據表（PDF） - Advanced Micro Devices

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AM29F040B-1

4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory

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

Table 1. Am29F040B Device Bus Operations ...................................8

Requirements for Reading Array Data ..................................... 8

Writing Commands/Command Sequences .............................. 8

Program and Erase Operation Status ...................................... 8

Standby Mode .......................................................................... 8

Output Disable Mode................................................................ 9

Table 2. Sector Addresses Table ......................................................9

Autoselect Mode..................................................................... 10

Table 3. Am29F040B Autoselect Codes (High Voltage Method) .....10

Sector Protection/Unprotection............................................... 10

Hardware Data Protection ...................................................... 10

Low VCC Write Inhibit ...................................................................... 10

Write Pulse “Glitch” Protection ........................................................ 10

Logical Inhibit .................................................................................. 10

Power-Up Write Inhibit .................................................................... 10

Command Definitions . . . . . . . . . . . . . . . . . . . . . 11

Reading Array Data ................................................................ 11

Reset Command..................................................................... 11

Autoselect Command Sequence ............................................ 11

Byte Program Command Sequence....................................... 11

Figure 1. Program Operation ......................................................... 12

Chip Erase Command Sequence ........................................... 12

Sector Erase Command Sequence ........................................ 12

Erase Suspend/Erase Resume Commands........................... 13

Figure 2. Erase Operation.............................................................. 13

Command Definitions ............................................................. 14

Table 4. Am29F040B Command Definitions....................................14

Write Operation Status . . . . . . . . . . . . . . . . . . . . 15

DQ7: Data# Polling................................................................. 15

Figure 3. Data# Polling Algorithm .................................................. 15

DQ6: Toggle Bit I .................................................................... 16

DQ2: Toggle Bit II ................................................................... 16

Reading Toggle Bits DQ6/DQ2 .............................................. 16

DQ5: Exceeded Timing Limits ................................................ 16

DQ3: Sector Erase Timer ....................................................... 17

Figure 4. Toggle Bit Algorithm........................................................ 17

Table 5. Write Operation Status.......................................................18

Absolute Maximum Ratings. . . . . . . . . . . . . . . . . 19

Figure 5. Maximum Negative Overshoot Waveform ..................... 19

Figure 6. Maximum Positive Overshoot Waveform....................... 19

Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 19

DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 20

TTL/NMOS Compatible .......................................................... 20

CMOS Compatible.................................................................. 20

Test Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 7. Test Setup..................................................................... 21

Table 6. Test Specifications ........................................................... 21

Key to Switching Waveforms. . . . . . . . . . . . . . . . 21

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 22

Read Only Operations ............................................................ 22

Figure 8. Read Operation Timings ................................................ 22

Erase and Program Operations .............................................. 23

Figure 9. Program Operation Timings........................................... 24

Figure 10. Chip/Sector Erase Operation Timings ......................... 24

Figure 11. Data# Polling Timings (During Embedded Algorithms) 25

Figure 12. Toggle Bit Timings (During Embedded Algorithms)..... 25

Figure 13. DQ2 vs. DQ6................................................................ 26

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 27

Erase and Program Operations .............................................. 27

Alternate CE# Controlled Writes .................................................... 27

Figure 14. Alternate CE# Controlled Write Operation Timings ..... 28

Erase and Programming Performance . . . . . . . . 29

Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 29

TSOP Pin Capacitance . . . . . . . . . . . . . . . . . . . . 29

PLCC and PDIP Pin Capacitance. . . . . . . . . . . . . 30

Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 31

PD 032—32-Pin Plastic DIP ................................................... 31

PL 032—32-Pin Plastic Leaded Chip Carrier ......................... 32

TS 032—32-Pin Standard Thin Small Package...................... 33

TSR032—32-Pin Reversed Thin Small Outline Package....... 34

Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 35

Revision A (May 1997) ........................................................... 35

Revision B (January 1998) ..................................................... 35

Revision B+1 (January 1998) ................................................. 35

Revision B+2 (April 1998)....................................................... 35

Revision C (January 1999) ..................................................... 35

Revision C+1 (February 1999) ............................................... 35

Revision C+2 (May 17, 1999) ................................................. 35

Revision D (November 15, 1999) ........................................... 35

Revision E (November 29, 2000)............................................ 35

Am29F040B

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