March 3, 2005

3

Ad vance

Inform ati o n

Table of Contents

Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . 5

Special Handling Instructions for FBGA Packages ............6

Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 8

Device Bus Operations . . . . . . . . . . . . . . . . . . . . . . 9

Table 1. Am29SL400C Device Bus Operations ......................... 9

Word/Byte Configuration ........................................................9

Requirements for Reading Array Data .................................9

Writing Commands/Command Sequences ....................... 10

Program and Erase Operation Status ................................. 10

Standby Mode ............................................................................ 10

Automatic Sleep Mode ............................................................ 10

RESET#: Hardware Reset Pin ............................................... 10

Output Disable Mode ................................................................11

Table 2. Am29SL400CT Top Boot Block Sector

Address Table ...................................................................................... 11

Table 3. Am29SL400CB Bottom Boot Block

Sector Address Table ........................................................................ 11

Autoselect Mode .........................................................................11

Table 4. Am29SL400C 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

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

Reading Array Data .................................................................. 14

Reset Command ........................................................................ 14

Autoselect Command Sequence ...........................................15

Word/Byte Program Command Sequence ........................15

Figure 3. Program Operation.......................................................... 16

Chip Erase Command Sequence ...........................................16

Sector Erase Command Sequence .......................................16

Figure 4. Erase Operation ............................................................... 17

Command Definitions ............................................................. 18

Table 5. Am29SL400C Command Definitions ..........................18

Write Operation Status .......................................................... 18

DQ7: Data# Polling .................................................................. 19

Figure 5. Data# Polling Algorithm................................................. 19

RY/BY#: Ready/Busy# ............................................................. 19

DQ6: Toggle Bit I ..................................................................... 20

DQ2: Toggle Bit II .................................................................... 20

Reading Toggle Bits DQ6/DQ2 ........................................... 20

Figure 6. Toggle Bit Algorithm ....................................................... 21

DQ5: Exceeded Timing Limits ...............................................21

DQ3: Sector Erase Timer ....................................................... 21

Table 6. Write Operation Status ................................................. 22

Absolute Maximum Ratings . . . . . . . . . . . . . . . . . 22

Figure 7. Maximum Negative Overshoot Waveform............. 22

Figure 8. Maximum Positive Overshoot Waveform .............. 22

Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . 23

DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 24

Automatic Sleep Currents) ............................................................ 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

Read Operations .......................................................................27

Figure 13. Read Operations Timings ............................................ 27

Hardware Reset (RESET#) ................................................... 28

Figure 14. RESET# Timings ............................................................. 28

Figure 15. BYTE# Timings for Read Operations ...................... 29

Figure 16. BYTE# Timings for Write Operations.................... 29

Erase/Program Operations ................................................... 30

Figure 17. Program Operation Timings........................................ 31

Figure 18. Chip/Sector Erase Operation Timings .................... 32

AC Characteristics

. . . . . . . . . . . . . . . . . . . . . . . 33

Figure 19. Data# Polling Timings (During Embedded

Algorithms) ......................................................................................... 33

Figure 20. Toggle Bit Timings (During Embedded

Algorithms) ......................................................................................... 33

Figure 21. DQ2 vs. DQ6.................................................................. 34

Temporary Sector Unprotect ...............................................34

Figure 22. Temporary Sector Unprotect Timing

Diagram................................................................................................ 34

Figure 23. Sector Protect/Unprotect Timing Diagram .......... 35

Alternate CE# Controlled Erase/Program

Operations ..................................................................................36

AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 24. Alternate CE# Controlled Write Operation

Timings ................................................................................................. 37

Erase and Programming Performance . . . . . . . . 38

Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 38

TSOP Pin and BGA Package Capacitance . . . . . 38

Data Retention . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 39

TS048—48-Pin Standard TSOP ............................................39

Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . .40

FBA048—48-Ball Fine-Pitch Ball Grid Array

(FBGA) 6 x 8 mm Package .................................................... 40

Revision Summary. . . . . . . . . . . . . . . . . . . . . . . . . 41