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AM49BDS640AH Datasheet(PDF) 6 Page - SPANSION |
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6 / 84 page 4 Am49BDS640AH December 5, 2003 A D VA NCE I N FO RM ATIO N TABLE OF CONTENTS Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 6 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Block Diagram of Simultaneous Operation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . 9 Special Handling Instructions for FBGA Package .................... 9 Ordering Information . . . . . . . . . . . . . . . . . . . . . . 11 Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 12 Table 1. Device Bus Operations ....................................................12 VersatileIO™ (VIO) Control ..................................................... 12 Requirements for Asynchronous Read Operation (Non-Burst) ............................................................ 12 Requirements for Synchronous (Burst) Read Operation ........ 12 8-, 16-, and 32-Word Linear Burst with Wrap Around ......... 13 Table 2. Burst Address Groups .......................................................13 Burst Suspend/Resume .......................................................... 13 Configuration Register ............................................................ 14 Reduced Wait-state Handshaking Option .............................. 14 Simultaneous Read/Write Operations with Zero Latency ....... 14 Writing Commands/Command Sequences ............................ 14 Accelerated Program Operation ............................................. 15 Autoselect Mode ..................................................................... 15 Table 3. Am49BDS640AH Boot Sector/Sector Block Addresses for Protection/Unprotection ...................................................................16 Sector/Sector Block Protection and Unprotection .................. 16 Sector Protection ................................................................. 16 Selecting a Sector Protection Mode .................................... 16 Persistent Sector Protection ................................................... 17 Persistent Protection Bit (PPB) ............................................ 17 Persistent Protection Bit Lock (PPB Lock) .......................... 17 Dynamic Protection Bit (DYB) ............................................. 17 Table 4. Sector Protection Schemes ...............................................18 Persistent Sector Protection Mode Locking Bit ...................... 18 Password Protection Mode ..................................................... 18 Password and Password Mode Locking Bit ........................... 19 64-bit Password ...................................................................... 19 Persistent Protection Bit Lock ................................................. 19 High Voltage Sector Protection .............................................. 19 Standby Mode ........................................................................ 19 Automatic Sleep Mode ........................................................... 20 RESET#: Hardware Reset Input .......................................... 20 Output Disable Mode ........................................................... 20 Figure 1. Temporary Sector Unprotect Operation........................... 20 Figure 2. In-System Sector Protection/ Sector Unprotection Algorithms ...................................................... 21 SecSi™ (Secured Silicon) Sector Flash Memory Region ............................................................ 22 Factory-Locked Area (64 words) ......................................... 22 Table 5. SecSiTM Sector Addresses ...............................................22 Customer-Lockable Area (64 words) ................................... 22 SecSi Sector Protection Bits ................................................ 22 Hardware Data Protection ................................................... 22 Write Protect (WP#) ................................................................ 23 Low VCC Write Inhibit .......................................................... 23 Write Pulse “Glitch” Protection ............................................ 23 Logical Inhibit ...................................................................... 23 Power-Up Write Inhibit ......................................................... 23 Table 6. CFI Query Identification String ......................................... 23 Table 9. Primary Vendor-Specific Extended Query ....................... 25 Command Definitions . . . . . . . . . . . . . . . . . . . . . 26 Reading Array Data ................................................................ 26 Set Configuration Register Command Sequence ................... 26 Figure 3. Synchronous/Asynchronous State Diagram ................... 26 Read Mode Setting .............................................................. 26 Programmable Wait State Configuration ............................. 26 Table 10. Programmable Wait State Settings ................................ 27 Reduced Wait-state Handshaking Option ........................... 27 Table 11. Wait States for Reduced wait-state Handshaking ......... 27 Standard Handshaking Option ............................................ 27 Table 12. Wait States for Standard Handshaking .......................... 27 Read Mode Configuration .................................................... 28 Table 13. Read Mode Settings ....................................................... 28 Burst Active Clock Edge Configuration ................................ 28 RDY Configuration ............................................................... 28 Table 14. Configuration Register ................................................... 29 Reset Command ..................................................................... 29 Autoselect Command Sequence ............................................ 29 Enter SecSi™ Sector/Exit SecSi Sector Command Sequence .............................................................. 30 Program Command Sequence ............................................... 30 Unlock Bypass Command Sequence .................................. 30 Figure 4. Program Operation ......................................................... 31 Chip Erase Command Sequence ........................................... 31 Sector Erase Command Sequence ........................................ 31 Erase Suspend/Erase Resume Commands ........................... 32 Figure 5. Erase Operation.............................................................. 33 Password Program Command ................................................ 33 Password Verify Command .................................................... 33 Password Protection Mode Locking Bit Program Command .. 33 Persistent Sector Protection Mode Locking Bit Program Com- mand ....................................................................................... 33 SecSi Sector Protection Bit Program Command .................... 34 PPB Lock Bit Set Command ................................................... 34 DYB Write Command ............................................................. 34 Password Unlock Command .................................................. 34 PPB Program Command ........................................................ 34 All PPB Erase Command ........................................................ 34 DYB Write Command ............................................................. 35 PPB Status Command ............................................................ 35 PPB Lock Bit Status Command .............................................. 35 DYB Status Command ............................................................ 35 Command Definitions ............................................................. 36 Table 15. Command Definitions .................................................... 36 Write Operation Status . . . . . . . . . . . . . . . . . . . . 39 DQ7: Data# Polling ................................................................. 39 Figure 6. Data# Polling Algorithm .................................................. 39 DQ6: Toggle Bit I .................................................................... 40 Figure 7. Toggle Bit Algorithm........................................................ 41 DQ2: Toggle Bit II ................................................................... 41 Table 16. DQ6 and DQ2 Indications .............................................. 42 Reading Toggle Bits DQ6/DQ2 ............................................... 42 DQ5: Exceeded Timing Limits ................................................ 42 DQ3: Sector Erase Timer ....................................................... 43 Table 17. Write Operation Status ................................................... 43 |
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