November 1, 2006 21445E5

Am29F040B

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

Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 7

Table 1. Am29F040B Device Bus Operations ...................................7

Requirements for Reading Array Data ..................................... 7

Writing Commands/Command Sequences .............................. 7

Program and Erase Operation Status ...................................... 7

Standby Mode .......................................................................... 7

Output Disable Mode................................................................ 8

Table 2. Sector Addresses Table ......................................................8

Autoselect Mode....................................................................... 9

Table 3. Am29F040B Autoselect Codes (High Voltage Method) .......9

Sector Protection/Unprotection................................................. 9

Hardware Data Protection ........................................................ 9

Write Pulse “Glitch” Protection .......................................................... 9

Logical Inhibit .................................................................................... 9

Power-Up Write Inhibit ...................................................................... 9

Command Definitions . . . . . . . . . . . . . . . . . . . . . 10

Reading Array Data ................................................................ 10

Reset Command..................................................................... 10

Autoselect Command Sequence ............................................ 10

Byte Program Command Sequence....................................... 10

Figure 1. Program Operation ......................................................... 11

Chip Erase Command Sequence ........................................... 11

Sector Erase Command Sequence ........................................ 11

Erase Suspend/Erase Resume Commands........................... 12

Figure 2. Erase Operation.............................................................. 12

Command Definitions ............................................................. 13

Table 4. Am29F040B Command Definitions....................................13

Write Operation Status . . . . . . . . . . . . . . . . . . . . 14

DQ7: Data# Polling................................................................. 14

Figure 3. Data# Polling Algorithm .................................................. 14

DQ6: Toggle Bit I .................................................................... 15

DQ2: Toggle Bit II ................................................................... 15

Reading Toggle Bits DQ6/DQ2 .............................................. 15

DQ5: Exceeded Timing Limits ................................................ 15

DQ3: Sector Erase Timer ....................................................... 16

Figure 4. Toggle Bit Algorithm....................................................... 16

Table 5. Write Operation Status...................................................... 17

Absolute Maximum Ratings. . . . . . . . . . . . . . . . . 18

Figure 5. Maximum Negative Overshoot Waveform ..................... 18

Figure 6. Maximum Positive Overshoot Waveform....................... 18

Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 18

DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 19

TTL/NMOS Compatible .......................................................... 19

CMOS Compatible.................................................................. 19

Test Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 7. Test Setup..................................................................... 20

Table 6. Test Specifications ........................................................... 20

Key to Switching Waveforms. . . . . . . . . . . . . . . . 20

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 21

Read Only Operations ............................................................ 21

Figure 8. Read Operation Timings ................................................ 21

Erase and Program Operations .............................................. 22

Figure 9. Program Operation Timings........................................... 23

Figure 10. Chip/Sector Erase Operation Timings ......................... 23

Figure 11. Data# Polling Timings (During Embedded Algorithms) 24

Figure 12. Toggle Bit Timings (During Embedded Algorithms)..... 24

Figure 13. DQ2 vs. DQ6................................................................ 25

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 26

Erase and Program Operations .............................................. 26

Alternate CE# Controlled Writes .................................................... 26

Figure 14. Alternate CE# Controlled Write Operation Timings ..... 27

Erase and Programming Performance . . . . . . . . 28

Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 28

TSOP Pin Capacitance . . . . . . . . . . . . . . . . . . . . 28

PLCC and PDIP Pin Capacitance. . . . . . . . . . . . . 29

Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 30

PD 032—32-Pin Plastic DIP ................................................... 30

PL 032—32-Pin Plastic Leaded Chip Carrier ......................... 31

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

Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 33