Micron M25P40 Serial Flash Embedded Memory
Features
Contents
Functional Description ..................................................................................................................................... 6
Signal Descriptions ........................................................................................................................................... 8
SPI Modes ........................................................................................................................................................ 9
Operating Features ......................................................................................................................................... 11
Page Programming ..................................................................................................................................... 11
Sector Erase, Bulk Erase .............................................................................................................................. 11
Polling during a Write, Program, or Erase Cycle ............................................................................................ 11
Active Power, Standby Power, and Deep Power-Down .................................................................................. 11
Status Register ............................................................................................................................................ 12
Data Protection by Protocol ........................................................................................................................ 12
Software Data Protection ............................................................................................................................ 12
Hardware Data Protection .......................................................................................................................... 12
Hold Condition .......................................................................................................................................... 13
Configuration and Memory Map ..................................................................................................................... 14
Memory Configuration and Block Diagram .................................................................................................. 14
Memory Map – 4Mb Density ........................................................................................................................... 15
Command Set Overview ................................................................................................................................. 16
WRITE ENABLE .............................................................................................................................................. 18
WRITE DISABLE ............................................................................................................................................. 19
READ IDENTIFICATION ................................................................................................................................. 20
READ STATUS REGISTER ................................................................................................................................ 22
WIP Bit ...................................................................................................................................................... 23
WEL Bit ...................................................................................................................................................... 23
Block Protect Bits ....................................................................................................................................... 23
SRWD Bit ................................................................................................................................................... 23
WRITE STATUS REGISTER .............................................................................................................................. 24
READ DATA BYTES ......................................................................................................................................... 26
READ DATA BYTES at HIGHER SPEED ............................................................................................................ 27
PAGE PROGRAM ............................................................................................................................................ 28
SECTOR ERASE .............................................................................................................................................. 29
BULK ERASE .................................................................................................................................................. 30
DEEP POWER-DOWN ..................................................................................................................................... 31
RELEASE from DEEP POWER-DOWN .............................................................................................................. 32
READ ELECTRONIC SIGNATURE .................................................................................................................... 33
Power-Up/Down and Supply Line Decoupling ................................................................................................. 34
Power-Up Timing and Write Inhibit Voltage Specifications ............................................................................... 36
Maximum Ratings and Operating Conditions .................................................................................................. 37
Electrical Characteristics ................................................................................................................................ 38
AC Characteristics .......................................................................................................................................... 40
Package Information ...................................................................................................................................... 48
Device Ordering Information .......................................................................................................................... 54
Standard Parts ............................................................................................................................................ 54
Automotive Parts ........................................................................................................................................ 55
Revision History ............................................................................................................................................. 56
Rev. Y – 8/12 ............................................................................................................................................... 56
Rev. X – 04/12 ............................................................................................................................................. 56
Rev. W – 03/12 ............................................................................................................................................ 56
Rev. V – 02/12 ............................................................................................................................................. 56
Rev. U – 09/2011 ......................................................................................................................................... 56
Rev. 20.0 – 04/2010 ..................................................................................................................................... 56
PDF: 09005aef8456654f
m25p40.pdf - Rev. Y 8/12 EN
Micron Technology, Inc. reserves the right to change products or specifications without notice.
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