256Mb, 512Mb, 1Gb, 2Gb: 3V Embedded Parallel NOR Flash
Features
Contents
General Description ......................................................................................................................................... 8
Device Configurability .................................................................................................................................. 9
Signal Assignments ......................................................................................................................................... 10
Signal Descriptions ......................................................................................................................................... 12
Memory Organization .................................................................................................................................... 13
Memory Configuration ............................................................................................................................... 13
Memory Map – 256Mb–2Gb Density ........................................................................................................... 13
Bus Operations ............................................................................................................................................... 14
Read .......................................................................................................................................................... 14
Write .......................................................................................................................................................... 14
Standby ..................................................................................................................................................... 14
Output Disable ........................................................................................................................................... 15
Reset .......................................................................................................................................................... 15
Registers ........................................................................................................................................................ 16
Status Register ............................................................................................................................................ 16
Lock Register .............................................................................................................................................. 21
Standard Command Definitions – Address-Data Cycles .................................................................................... 24
READ and AUTO SELECT Operations .............................................................................................................. 26
READ/RESET Command ............................................................................................................................ 26
READ CFI Command .................................................................................................................................. 26
AUTO SELECT Command ........................................................................................................................... 26
Bypass Operations .......................................................................................................................................... 28
UNLOCK BYPASS Command ...................................................................................................................... 28
UNLOCK BYPASS RESET Command ............................................................................................................ 28
Program Operations ....................................................................................................................................... 29
PROGRAM Command ................................................................................................................................ 29
UNLOCK BYPASS PROGRAM Command ..................................................................................................... 29
WRITE TO BUFFER PROGRAM Command .................................................................................................. 29
UNLOCK BYPASS WRITE TO BUFFER PROGRAM Command ....................................................................... 31
WRITE TO BUFFER PROGRAM CONFIRM Command .................................................................................. 32
BUFFERED PROGRAM ABORT AND RESET Command ................................................................................ 32
PROGRAM SUSPEND Command ................................................................................................................ 32
PROGRAM RESUME Command .................................................................................................................. 33
Erase Operations ............................................................................................................................................ 33
CHIP ERASE Command .............................................................................................................................. 33
UNLOCK BYPASS CHIP ERASE Command ................................................................................................... 33
BLOCK ERASE Command ........................................................................................................................... 34
UNLOCK BYPASS BLOCK ERASE Command ................................................................................................ 34
ERASE SUSPEND Command ....................................................................................................................... 35
ERASE RESUME Command ........................................................................................................................ 35
BLANK CHECK Operation .............................................................................................................................. 35
BLANK CHECK Commands ........................................................................................................................ 35
Block Protection Command Definitions – Address-Data Cycles ........................................................................ 37
Protection Operations .................................................................................................................................... 40
LOCK REGISTER Commands ...................................................................................................................... 40
PASSWORD PROTECTION Commands ....................................................................................................... 40
NONVOLATILE PROTECTION Commands .................................................................................................. 40
NONVOLATILE PROTECTION BIT LOCK BIT Commands ............................................................................ 43
VOLATILE PROTECTION Commands .......................................................................................................... 43
EXTENDED MEMORY BLOCK Commands .................................................................................................. 43
PDF: 09005aef849b4b09
m29ew_256mb_2gb.pdf - Rev. B 8/12 EN
4
Micron Technology, Inc. reserves the right to change products or specifications without notice.
? 2012 Micron Technology, Inc. All rights reserved.
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