256Mb: 3V Embedded Parallel NOR Flash
Features
Contents
Description ...................................................................................................................................................... 7
Signals ......................................................................................................................................................... 8
Signal Assignments ........................................................................................................................................... 9
Signal Descriptions ......................................................................................................................................... 11
Memory Organization .................................................................................................................................... 13
Memory Configuration ............................................................................................................................... 13
Block Addresses and Protection Groups ....................................................................................................... 14
Bus Operations ............................................................................................................................................... 18
Read .......................................................................................................................................................... 18
Write .......................................................................................................................................................... 18
Standby and Automatic Standby ................................................................................................................. 18
Output Disable ........................................................................................................................................... 19
Reset .......................................................................................................................................................... 19
Registers ........................................................................................................................................................ 20
Status Register ............................................................................................................................................ 20
Lock Register .............................................................................................................................................. 25
Standard Command Definitions – Address-Data Cycles .................................................................................... 27
READ and AUTO SELECT Operations .............................................................................................................. 30
READ/RESET Command ............................................................................................................................ 30
READ CFI Command .................................................................................................................................. 30
UNLOCK BYPASS READ CFI Command ....................................................................................................... 30
AUTO SELECT Command ........................................................................................................................... 30
Bypass Operations .......................................................................................................................................... 32
UNLOCK BYPASS Command ...................................................................................................................... 32
UNLOCK BYPASS RESET Command ............................................................................................................ 32
Program Operations ....................................................................................................................................... 33
PROGRAM Command ................................................................................................................................ 33
UNLOCK BYPASS PROGRAM Command ..................................................................................................... 33
WRITE TO BUFFER PROGRAM Command .................................................................................................. 33
UNLOCK BYPASS WRITE TO BUFFER PROGRAM Command ....................................................................... 36
WRITE TO BUFFER PROGRAM CONFIRM Command .................................................................................. 36
BUFFERED PROGRAM ABORT AND RESET Command ................................................................................ 36
PROGRAM SUSPEND Command ................................................................................................................ 36
PROGRAM RESUME Command .................................................................................................................. 37
WRITE TO BUFFER PROGRAM SUSPEND Command .................................................................................. 37
WRITE TO BUFFER PROGRAM RESUME Command .................................................................................... 38
ENTER ENHANCED BUFFERED Command ................................................................................................ 38
ENHANCED BUFFERED PROGRAM Command ........................................................................................... 38
ENHANCED BUFFERED PROGRAM ABORT RESET Command .................................................................... 39
EXIT ENHANCED BUFFERED PROGRAM Command ................................................................................... 41
Erase Operations ............................................................................................................................................ 42
CHIP ERASE Command .............................................................................................................................. 42
UNLOCK BYPASS CHIP ERASE Command ................................................................................................... 42
BLOCK ERASE Command ........................................................................................................................... 42
UNLOCK BYPASS BLOCK ERASE Command ................................................................................................ 43
ERASE SUSPEND Command ....................................................................................................................... 43
ERASE RESUME Command ........................................................................................................................ 44
Block Protection Command Definitions – Address-Data Cycles ........................................................................ 45
Protection Operations .................................................................................................................................... 47
LOCK REGISTER Commands ...................................................................................................................... 47
PDF: 09005aef84ecabef
m29dw_256g.pdf - Rev. A 10/12 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
3
© 2012 Micron Technology, Inc. All rights reserved.
MICRON [ MICRON TECHNOLOGY ]
