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5 / 48 page December 4, 2006 21523D4 Am29LV400B 3 D A TA SH EE T TABLE OF CONTENTS Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4 Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . 5 Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . 6 Special Handling Instructions for (FBGA) ...................................... 7 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 8 Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 9 Table 1. Am29LV400B 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. Am29LV400BT Top Boot Sector Address Table .....................11 Table 3. Am29LV400BB Bottom Boot Sector Address Table ...............11 Autoselect Mode .......................................................................... 12 Table 4. Am29LV400B Autoselect Codes (High Voltage Method) ........12 Sector Protection/Unprotection .................................................... 12 Figure 1. In-System Sector Protect/Unprotect Algorithms .................... 13 Temporary Sector Unprotect ........................................................ 14 Figure 2. Temporary Sector Unprotect Operation................................. 14 Hardware Data Protection ............................................................ 14 Low V CC Write Inhibit .................................................................... 14 Write Pulse “Glitch” Protection ..................................................... 14 Logical Inhibit ............................................................................... 14 Power-Up Write Inhibit ................................................................. 14 Command Definitions . . . . . . . . . . . . . . . . . . . . . 15 Reading Array Data ...................................................................... 15 Reset Command .......................................................................... 15 Autoselect Command Sequence .................................................. 15 Word/Byte Program Command Sequence ................................... 15 Unlock Bypass Command Sequence ........................................... 16 Figure 3. Program Operation ................................................................ 16 Chip Erase Command Sequence ................................................. 16 Sector Erase Command Sequence .............................................. 17 Erase Suspend/Erase Resume Commands ................................ 17 Figure 4. Erase Operation..................................................................... 18 Table 5. Am29LV400B Command Definitions .......................................19 Write Operation Status . . . . . . . . . . . . . . . . . . . . 20 DQ7: Data# Polling ...................................................................... 20 Figure 5. Data# Polling Algorithm ......................................................... 20 RY/BY#: Ready/Busy# ................................................................. 21 DQ6: Toggle Bit I .......................................................................... 21 DQ2: Toggle Bit II ......................................................................... 21 Reading Toggle Bits DQ6/DQ2 .................................................... 21 DQ5: Exceeded Timing Limits ...................................................... 22 DQ3: Sector Erase Timer ............................................................. 22 Figure 6. Toggle Bit Algorithm............................................................... 22 Table 6. Write Operation Status ........................................................... 23 Absolute Maximum Ratings. . . . . . . . . . . . . . . . . 24 Figure 7. Maximum Negative Overshoot Waveform............................. 24 Figure 8. Maximum Positive Overshoot Waveform .............................. 24 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 9. I CC1 Current vs. Time (Showing Active and Automatic Sleep Currents)..................................................................................... 26 Figure 10. Typical I CC1 vs. Frequency................................................... 26 Test Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Figure 11. Test Setup ........................................................................... 27 Table 7. Test Specifications .................................................................. 27 Figure 12. Input Waveforms and Measurement Levels ........................ 27 AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 28 Read Operations .......................................................................... 28 Figure 13. Read Operations Timings.................................................... 28 Hardware Reset (RESET#) .......................................................... 29 Figure 14. RESET# Timings ................................................................. 29 Word/Byte Configuration (BYTE#) ............................................. 30 Figure 15. BYTE# Timings for Read Operations .................................. 30 Figure 16. BYTE# Timings for Write Operations .................................. 30 Erase/Program Operations .......................................................... 31 Figure 17. Program Operation Timings ................................................ 32 Figure 18. Chip/Sector Erase Operation Timings ................................. 33 Figure 19. Data# Polling Timings (During Embedded Algorithms) ....... 34 Figure 20. Toggle Bit Timings (During Embedded Algorithms) ............ 34 Figure 21. DQ2 vs. DQ6 ....................................................................... 35 Figure 22. Temporary Sector Unprotect Timing Diagram ..................... 35 Figure 23. Sector Protect/Unprotect Timing Diagram ........................... 36 Figure 24. Alternate CE# Controlled Write Operation Timings ............. 38 Erase And Programming Performance. . . . . . . . 39 Latchup Characteristics . . . . . . . . . . . . . . . . . . . 39 TSOP And SO Pin Capacitance . . . . . . . . . . . . . 39 BGA Ball Capacitance . . . . . . . . . . . . . . . . . . . . . 40 Data Retention . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 TS 048—48-Pin Standard TSOP ................................................. 41 TSR048—48-Pin Reverse TSOP ................................................. 42 FBA048—48-ball Fine-Pitch Ball Grid Array (FBGA) 6 x 8 mm package ........................................................................ 43 SO 044—44-Pin Small Outline Package ..................................... 44 Revision A (January 1998) ........................................................... 45 Revision B (July 1998) ................................................................. 45 Revision B+1 (August 1998) ........................................................ 45 Revision C (January 1999) ........................................................... 45 Revision C+1 (July 2, 1999) ......................................................... 45 Revision D (January 3, 1999) ....................................................... 45 Revision D+1 (November 8, 2000) ............................................... 45 Revision D+2 (October 30, 2003) ................................................ 45 Revision D+3 (December 13, 2005) ............................................. 45 Revision D4 (December 4, 2006) ................................................. 45 |
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