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Micron M25P40 Serial Flash Embedded

Memory

4Mb, 3V

Features

• SPI bus-compatible serial interface

• 4Mb Flash memory

• 75 MHz clock frequency (maximum)

• 2.3V to 3.6V single supply voltage

• Page program (up to 256 bytes) in 0.8ms (TYP)

• Erase capability

– Sector erase: 512Kb in 0.6 s (TYP)

– Bulk erase: 4Mb in 4.5 s (TYP)

• Write protection

– Hardware write protection: protected area size

defined by nonvolatile bits BP0, BP1, BP2

• Deep power-down: 1µA (TYP)

• Electronic signature

– JEDEC-standard 2-byte signature (2013h)

– Unique ID code (UID) with 16-byte read-only

space, available upon request

– RES command, one-byte signature (12h) for

backward compatibility

• More than 100,000 write cycles per sector

• Automotive-grade parts available

• Packages (RoHS-compliant)

– SO8N (MN) 150 mils

– SO8W (MW) 208 mils

– VFDFPN8 (MP) MLP8 6mm x 5mm

– UFDFPN8 (MC) MLP8 4mm x 3mm

– UFDFPN8 (MB) MLP8 2mm x 3mm

Micron M25P40 Serial Flash Embedded Memory

Features

PDF: 09005aef8456654f

m25p40.pdf - Rev. Z 1/13 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

Products and specifications discussed herein are subject to change by Micron without notice.

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 ................................................................................................................................ 21

WIP Bit ...................................................................................................................................................... 22

WEL Bit ...................................................................................................................................................... 22

Block Protect Bits ....................................................................................................................................... 22

SRWD Bit ................................................................................................................................................... 22

WRITE STATUS REGISTER .............................................................................................................................. 23

READ DATA BYTES ......................................................................................................................................... 25

READ DATA BYTES at HIGHER SPEED ............................................................................................................ 26

PAGE PROGRAM ............................................................................................................................................ 27

SECTOR ERASE .............................................................................................................................................. 28

BULK ERASE .................................................................................................................................................. 29

DEEP POWER-DOWN ..................................................................................................................................... 30

RELEASE from DEEP POWER-DOWN .............................................................................................................. 31

READ ELECTRONIC SIGNATURE .................................................................................................................... 32

Power-Up/Down and Supply Line Decoupling ................................................................................................. 33

Power-Up Timing and Write Inhibit Voltage Specifications ............................................................................... 35

Maximum Ratings and Operating Conditions .................................................................................................. 36

Electrical Characteristics ................................................................................................................................ 37

AC Characteristics .......................................................................................................................................... 39

Package Information ...................................................................................................................................... 47

Device Ordering Information .......................................................................................................................... 52

Standard Parts ............................................................................................................................................ 52

Automotive Parts ........................................................................................................................................ 53

Revision History ............................................................................................................................................. 55

Rev. Z – 1/13 ............................................................................................................................................... 55

Rev. Y – 8/12 ............................................................................................................................................... 55

Rev. X – 04/12 ............................................................................................................................................. 55

Rev. W – 03/12 ............................................................................................................................................ 55

Rev. V – 02/12 ............................................................................................................................................. 55

Rev. U – 09/2011 ......................................................................................................................................... 55

Micron M25P40 Serial Flash Embedded Memory

Features

PDF: 09005aef8456654f

m25p40.pdf - Rev. Z 1/13 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

Rev. 20.0 – 04/2010 ..................................................................................................................................... 55

Rev. 19.0 – 02/2010 ..................................................................................................................................... 55

Rev. 18.0 – 05/2009 ..................................................................................................................................... 55

Rev. 17.0 – 02/2009 ..................................................................................................................................... 56

Rev. 16.0 – 10/2008 ..................................................................................................................................... 56

Rev. 15.0 – 12/2007 ..................................................................................................................................... 56

Rev. 14.0 – 06/2007 ..................................................................................................................................... 56

Rev. 13.0 – 05/2007 ..................................................................................................................................... 56

Rev. 12.0 – 01/2007 ..................................................................................................................................... 56

Rev. 11.0 – 12/2006 ..................................................................................................................................... 57

Rev. 10.0 – 06/2006 ..................................................................................................................................... 57

Rev. 9.0 – 04/2006 ....................................................................................................................................... 57

Rev. 8.0 – 12/2005 ....................................................................................................................................... 57

Rev. 7.0 – 10/2005 ....................................................................................................................................... 57

Rev. 6.0 – 08/2005 ....................................................................................................................................... 57

Rev. 5.0 – 01/2005 ....................................................................................................................................... 57

Rev. 4.0 – 08/2004 ....................................................................................................................................... 58

Rev. 3.0 – 03/2004 ....................................................................................................................................... 58

Rev. 2.0 – 11/2003 ....................................................................................................................................... 58

Rev. 1.0 – 06/2003 ....................................................................................................................................... 58

Micron M25P40 Serial Flash Embedded Memory

Features

PDF: 09005aef8456654f

m25p40.pdf - Rev. Z 1/13 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

List of Figures

Figure 1: Logic Diagram ................................................................................................................................... 6

Figure 2: Pin Connections: SO8, MLP8 ............................................................................................................. 7

Figure 3: SPI Modes Supported ........................................................................................................................ 9

Figure 4: Bus Master and Memory Devices on the SPI Bus ............................................................................... 10

Figure 5: Hold Condition Activation ............................................................................................................... 13

Figure 6: Block Diagram ................................................................................................................................ 14

Figure 7: WRITE ENABLE Command Sequence .............................................................................................. 18

Figure 8: WRITE DISABLE Command Sequence ............................................................................................. 19

Figure 9: READ IDENTIFICATION Command Sequence ................................................................................. 20

Figure 10: READ STATUS REGISTER Command Sequence .............................................................................. 21

Figure 11: Status Register Format ................................................................................................................... 21

Figure 12: WRITE STATUS REGISTER Command Sequence ............................................................................. 23

Figure 13: READ DATA BYTES Command Sequence ........................................................................................ 25

Figure 14: READ DATA BYTES at HIGHER SPEED Command Sequence ........................................................... 26

Figure 15: PAGE PROGRAM Command Sequence ........................................................................................... 27

Figure 16: SECTOR ERASE Command Sequence ............................................................................................. 28

Figure 17: BULK ERASE Command Sequence ................................................................................................. 29

Figure 18: DEEP POWER-DOWN Command Sequence ................................................................................... 30

Figure 19: RELEASE from DEEP POWER-DOWN Command Sequence ............................................................. 31

Figure 20: READ ELECTRONIC SIGNATURE Command Sequence .................................................................. 32

Figure 21: Power-Up Timing .......................................................................................................................... 34

Figure 22: AC Measurement I/O Waveform ..................................................................................................... 39

Figure 23: Serial Input Timing ........................................................................................................................ 45

Figure 24: Write Protect Setup and Hold during WRSR when SRWD=1 Timing ................................................. 45

Figure 25: Hold Timing .................................................................................................................................. 46

Figure 26: Output Timing .............................................................................................................................. 46

Figure 27: SO8N 150 mils Body Width ............................................................................................................ 47

Figure 28: SO8W 208 mils Body Width ............................................................................................................ 48

Figure 29: VFDFPN8 (MLP8) 6mm x 5mm ...................................................................................................... 49

Figure 30: UFDFPN8 (MLP8) 4mm x 3mm ...................................................................................................... 50

Figure 31: UFDFPN8 (MLP8) 2mm x 3mm ...................................................................................................... 51

Micron M25P40 Serial Flash Embedded Memory

Features

PDF: 09005aef8456654f

m25p40.pdf - Rev. Z 1/13 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

List of Tables

Table 1: Signal Names ...................................................................................................................................... 7

Table 2: Signal Descriptions ............................................................................................................................. 8

Table 3: Protected Area Sizes .......................................................................................................................... 12

Table 4: Sectors[7:0] ...................................................................................................................................... 15

Table 5: Command Set Codes ........................................................................................................................ 17

Table 6: READ IDENTIFICATION Data Out Sequence ..................................................................................... 20

Table 7: Status Register Protection Modes ...................................................................................................... 24

Table 8: Power-Up Timing and V

Threshold ................................................................................................. 35

Table 9: Absolute Maximum Ratings .............................................................................................................. 36

Table 10: Operating Conditions ...................................................................................................................... 36

Table 11: Data Retention and Endurance ........................................................................................................ 36

Table 12: DC Current Specifications (Device Grade 6) ..................................................................................... 37

Table 13: DC Voltage Specifications (Device Grade 6) ...................................................................................... 37

Table 14: DC Current Specifications (Device Grade 3) ..................................................................................... 37

Table 15: DC Voltage Specifications (Device Grade 3) ...................................................................................... 38

Table 16: Device Grade and AC Table Correlation ............................................................................................ 39

Table 17: AC Measurement Conditions ........................................................................................................... 39

Table 18: Capacitance .................................................................................................................................... 39

Table 19: Instruction Times, Process Technology 110nm ................................................................................. 40

Table 20: Instruction Times, Process Technology 150nm ................................................................................. 40

Table 21: AC Specifications (25 MHz, Device Grade 3, V

[min]=2.7V) ............................................................. 40

Table 22: AC Specifications (50 MHz, Device Grade 6, V

[min]=2.7V) ............................................................. 41

Table 23: AC Specifications (40 MHz, Device Grade 6, V

[min]=2.3V) ............................................................. 42

Table 24: AC Specifications (75MHz, Device Grade 3 and 6, V

[min]=2.7V) .................................................... 44

Table 25: Part Number Example ..................................................................................................................... 52

Table 26: Part Number Information Scheme ................................................................................................... 52

Table 27: Part Number Example ..................................................................................................................... 53

Table 28: Part Number Information Scheme ................................................................................................... 53

Micron M25P40 Serial Flash Embedded Memory

Features

PDF: 09005aef8456654f

m25p40.pdf - Rev. Z 1/13 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.