75MHz, Serial Peripheral Interface Flash Memory Features Micron Serial NOR Flash Memory 3V, 4Mb Page Erasable with Byte Alterability M45PE40 Features SPI bus-compatible serial interface 75 MHz clock frequency (MAX) 2.73.6V single supply voltage 4Mb of page-erasable Flash memory Page size: 256 bytes Page write: 11ms (TYP) Page program: 0.8ms (TYP) Page erase: 10ms (TYP) Sector erase: 64KB Hardware write protection of the bottom memory area 64KB Electronic signature JEDEC-standard, 2-byte signature (4013h) Deep power-down mode: 1A (TYP) WRITE cycles per sector: >100,000 Years of data retention: >20 Packages (RoHS-compliant) VFQFPN8 (MP) 6mm x 5mm SO8W (MW) 208 mil SO8N (MN) 150 mil PDF: 09005aef845660fc Micron Technology, Inc. reserves the right to change products or specifications without notice. 1 m45pe40.pdf - Rev. D 08/15 EN 2011 Micron Technology, Inc. All rights reserved. Products and specifications discussed herein are subject to change by Micron without notice.75MHz, Serial Peripheral Interface Flash Memory Features Contents Functional Description ..................................................................................................................................... 5 Signal Descriptions ........................................................................................................................................... 7 Configuration and Memory Map ....................................................................................................................... 8 Memory Configuration and Block Diagram .................................................................................................... 8 Memory Map 4Mb Density ............................................................................................................................. 9 Operating Features Overview .......................................................................................................................... 10 Sharing the Overhead of Modifying Data ..................................................................................................... 10 Easy Method to Modify Data ....................................................................................................................... 10 Fast Method to Modify Data ........................................................................................................................ 10 Polling During a WRITE, PROGRAM, or ERASE Cycle ................................................................................... 11 Reset .......................................................................................................................................................... 11 Active Power, Standby Power, and Deep Power-Down .................................................................................. 11 Status Register ............................................................................................................................................ 11 Protection Modes ....................................................................................................................................... 11 Serial Peripheral Interface Modes .................................................................................................................... 13 Command Set Overview ................................................................................................................................. 15 WRITE ENABLE .............................................................................................................................................. 17 WRITE DISABLE ............................................................................................................................................. 18 READ IDENTIFICATION ................................................................................................................................. 19 READ STATUS REGISTER ................................................................................................................................ 20 WIP Bit ...................................................................................................................................................... 21 WEL Bit ...................................................................................................................................................... 21 READ DATA BYTES ......................................................................................................................................... 22 READ DATA BYTES at HIGHER SPEED ............................................................................................................ 23 PAGE WRITE .................................................................................................................................................. 24 PAGE PROGRAM ............................................................................................................................................ 25 PAGE ERASE ................................................................................................................................................... 26 SECTOR ERASE .............................................................................................................................................. 27 DEEP POWER-DOWN ..................................................................................................................................... 28 RELEASE from DEEP POWER-DOWN .............................................................................................................. 29 Electrical Characteristics ................................................................................................................................ 30 Maximum Ratings and Operating Conditions .................................................................................................. 31 AC Characteristics .......................................................................................................................................... 32 Package Information ...................................................................................................................................... 38 Device Ordering Information .......................................................................................................................... 41 Standard Parts ............................................................................................................................................ 41 Revision History ............................................................................................................................................. 42 Rev. D 08/15 ............................................................................................................................................. 42 Rev. C 03/14 ............................................................................................................................................. 42 Rev. B 06/13 ............................................................................................................................................. 42 Rev. A 05/13 ............................................................................................................................................. 42 PDF: 09005aef845660fc Micron Technology, Inc. reserves the right to change products or specifications without notice. 2 m45pe40.pdf - Rev. D 08/15 EN 2011 Micron Technology, Inc. All rights reserved.