Features ....................................................................................................................................................... 6
3-Byte Address and 4-Byte Address Modes ..................................................................................................... 6
Signal Assignments ........................................................................................................................................... 8
Signal Descriptions ......................................................................................................................................... 10
Block Protection Areas ................................................................................................................................ 15
Serial Peripheral Interface Modes .................................................................................................................... 17
Nonvolatile and Volatile Registers ................................................................................................................... 20
Status Register ............................................................................................................................................ 21
Nonvolatile and Volatile Configuration Registers .......................................................................................... 22
Flag Status Register ..................................................................................................................................... 27
READ MEMORY Operations Timing – Single Transfer Rate ........................................................................... 46
READ MEMORY Operations Timing – Double Transfer Rate ......................................................................... 50
PROGRAM Operations .................................................................................................................................... 54
Activate or Terminate XIP Using Volatile Configuration Register ...................................................................
Activate or Terminate XIP Using Nonvolatile Configuration Register .............................................................
Confirmation Bit Settings Required to Activate or Terminate XIP ..................................................................
Terminating XIP After a Controller and Memory Reset .................................................................................
Power Up and Power Down .............................................................................................................................
Power Up and Power Down Requirements ...................................................................................................
Power Loss Recovery Sequence ...................................................................................................................
AC Reset Specifications ...................................................................................................................................
Absolute Ratings and Operating Conditions .....................................................................................................
DC Characteristics and Operating Conditions ..................................................................................................
AC Characteristics and Operating Conditions ..................................................................................................
Part Number Ordering Information .................................................................................................................
Revision History .............................................................................................................................................
Rev. M – 03/14 ............................................................................................................................................
Rev. L – 01/14 .............................................................................................................................................
Rev. K – 09/13 .............................................................................................................................................
Rev. I – 07/12 ..............................................................................................................................................
Rev. H – 06/12 .............................................................................................................................................
Rev. G, Production – 02/12 ..........................................................................................................................
Rev. F, Production – 02/12 ...........................................................................................................................
Rev. E, Production – 01/12 ...........................................................................................................................
Rev. D, Production – 09/11 ..........................................................................................................................
Rev. C – 11/10 .............................................................................................................................................
Rev. B – 08/10 .............................................................................................................................................
Rev. A – 06/10 .............................................................................................................................................
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PDF: 09005aef846a804a
n25q_256mb_1_8V_65nm.pdf - Rev. M 03/14 EN
3
Micron Technology, Inc. reserves the right to change products or specifications without notice.
Table 1: Signal Descriptions ...........................................................................................................................
Table 15: Extended Address Register Bit Definitions ........................................................................................
Table 16: Enhanced Volatile Configuration Register Bit Definitions ..................................................................
Table 17: Flag Status Register Bit Definitions ..................................................................................................
Table 18: Command Set .................................................................................................................................
Table 20: Data/Address Lines for READ ID and MULTIPLE I/O READ ID Commands .......................................
Table 21: Read ID Data Out ............................................................................................................................
Table 22: Extended Device ID, First Byte .........................................................................................................
Table 23: Serial Flash Discovery Parameter Data Structure ..............................................................................
Table 24: Parameter ID ..................................................................................................................................
Table 25: Command/Address/Data Lines for READ MEMORY Commands .......................................................
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