28F640L18, 28F128L18, 28F256L18
5.5
5.6
Program Resume................................................................................................ 32
Program Protection ............................................................................................. 33
6.0Erase Operations
..................................................................................................... 34
6.1
6.2
6.3
6.4
Block Erase......................................................................................................... 34
Erase Suspend.................................................................................................... 34
Erase Resume .................................................................................................... 35
Erase Protection..................................................................................................35
7.0Security Modes
......................................................................................................... 36
7.1
Block Locking ...................................................................................................... 36
7.1.1 Lock Block.............................................................................................. 36
7.1.2 Unlock Block .......................................................................................... 36
7.1.3 Lock-Down Block ................................................................................... 36
7.1.4 Block Lock Status................................................................................... 37
7.1.5 Block Locking During Suspend .............................................................. 37
Protection Registers............................................................................................ 38
7.2.1 Reading the Protection Registers .......................................................... 39
7.2.2 Programming the Protection Registers .................................................. 40
7.2.3 Locking the Protection Registers ........................................................... 40
7.2
8.0Dual-Operation Considerations
......................................................................... 41
8.1
8.2
Memory Partitioning ............................................................................................ 41
Read-While-Write Command Sequences ........................................................... 41
8.2.1 Simultaneous Operation Details............................................................. 42
8.2.2 Synchronous and Asynchronous Read-While-Write Characteristics and
Waveforms42
8.2.3 Read Operation During Buffered Programming Flowchart..................... 43
Simultaneous Operation Restrictions..................................................................43
8.3
9.0Special Read States
................................................................................................ 44
9.1
Read Status Register .......................................................................................... 44
9.1.1 Clear Status Register .............................................................................45
Read Device Identifier......................................................................................... 45
CFI Query............................................................................................................46
9.2
9.3
10.0
Power and Reset ...................................................................................................... 47
10.1
10.2
10.3
10.4
Power-Up/Down Characteristics ......................................................................... 47
Power Supply Decoupling ................................................................................... 47
Automatic Power Saving (APS) .......................................................................... 47
Reset Characteristics .......................................................................................... 47
11.0Thermal and DC Characteristics
........................................................................ 49
11.1
11.2
11.3
11.4
Absolute Maximum Ratings ................................................................................ 49
Operating Conditions .......................................................................................... 49
DC Current Characteristics ................................................................................. 50
DC Voltage Characteristics ................................................................................. 51
12.0AC Characteristics
................................................................................................... 52
12.1
12.2
AC Read Specifications (VCCQ = 1.35 V – 2.0 V).............................................. 52
AC Read Specifications (VCCQ = 1.7 V – 2.0 V)................................................ 53
4
NUMONYX [ NUMONYX B.V ]
