Contents
Part 2: Flash Device Operations ............................................................ 59
9
Device Operations Overview ............................................................................................61
9.1
9.2
9.3
Flash and LPSDRAM Bus Operations................................................................................61
Flash Bus Operations .........................................................................................................64
Flash Command Definitions................................................................................................66
10 Flash Read Operations .......................................................................................................69
10.1 Flash Asynchronous Page-Mode Read..............................................................................69
10.2 Flash Synchronous Burst-Mode Read................................................................................70
10.2.1 Flash Burst Suspend .............................................................................................70
10.3 Flash Read Configuration Register.....................................................................................70
10.3.1 Flash Read Mode ..................................................................................................71
10.3.2 Flash Latency Count..............................................................................................72
10.3.3 Flash Burst Sequence ...........................................................................................73
10.3.4 Flash Clock Edge...................................................................................................74
10.3.5 Flash Burst Wrap...................................................................................................74
10.3.6 Flash Burst Length.................................................................................................74
11 Flash Programming Operations......................................................................................75
11.1 Flash Word Programming...................................................................................................75
11.1.1 Flash Factory Word Programming.........................................................................76
11.2 Flash Buffered Programming..............................................................................................76
11.3 Flash Buffered Enhanced Factory Programming................................................................77
11.3.1 Flash Buffered EFP Requirements and Considerations........................................78
11.3.2 Flash Buffered EFP Setup Phase..........................................................................78
11.3.3 Flash Buffered EFP Program/Verify Phase ...........................................................78
11.3.4 Flash Buffered EFP Exit Phase .............................................................................79
11.4 Flash Program Suspend.....................................................................................................79
11.5 Flash Program Resume......................................................................................................80
11.6 Flash Program Protection...................................................................................................80
12 Flash Erase Operations ......................................................................................................81
12.1 Flash Block Erase...............................................................................................................81
12.2 Flash Erase Suspend .........................................................................................................81
12.3 Flash Erase Resume ..........................................................................................................82
12.4 Flash Erase Protection .......................................................................................................82
13 Flash Security Modes..........................................................................................................83
13.1 Flash Block Locking............................................................................................................83
13.1.1 Flash Lock Block....................................................................................................83
13.1.2 Flash Unlock Block ................................................................................................83
13.1.3 Flash Lock-Down Block .........................................................................................83
13.1.4 Flash Block Lock Status ........................................................................................84
13.1.5 Flash Block Locking During Suspend....................................................................84
13.2 Flash One-Time Programmable Protection Registers........................................................85
13.2.1 Flash Reading of the Protection Registers ............................................................86
13.2.2 Flash Programming of the Protection Registers....................................................87
13.2.3 Flash Locking the Protection Registers .................................................................87
4
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