M45PE20-VMN6P Alliance Memory

M45PE20 2-Mbit, page-erasable serial flash memory with byte alterability and a 75 MHz SPI bus interface Features SPI bus compatible serial interface 75 MHz clock rate (maximum) 2.7 V to 3.6 V single supply voltage 2-Mbit, page-erasable flash memory Page size: 256 bytes SO8 (MN) Page write in 11 ms (typical) 150 mil width Page program in 0.8 ms (typical) Page erase in 10 ms (typical) Sector erase (512 Kbits) Hardware write protection of the bottom sector (64 Kbytes) Electronic signature JEDEC standard two-byte signature (4012h) VFQFPN8 (MP) Unique ID code (UID) with 16 bytes read- (MLP8) only, available upon customer request only in the T9HX process Deep power-down mode 1 A (typical) More than 100 000 write cycles More than 20 years data retention Packages ECOPACK (RoHS compliant) May 2008 Rev 6 1/47 www.numonyx.com 1 Downloaded from Arrow.com.Contents M45PE20 Contents 1 Description . 6 2 Signal descriptions 8 2.1 Serial data output (Q) . 8 2.2 Serial data input (D) 8 2.3 Serial Clock (C) . 8 2.4 Chip Select (S) 8 2.5 Reset (Reset) . 8 2.6 Write Protect (W) 8 2.7 V supply voltage . 9 CC 2.8 V ground . 9 SS 3 SPI modes 10 4 Operating features . 12 4.1 Sharing the overhead of modifying data 12 4.2 An easy way to modify data . 12 4.3 A fast way to modify data . 13 4.4 Polling during a write, program or erase cycle . 13 4.5 Reset 13 4.6 Active power, standby power and deep power-down modes 13 4.7 Status register . 14 4.8 Protection modes . 14 5 Memory organization . 15 6 Instructions . 17 6.1 Write enable (WREN) 18 6.2 Write disable (WRDI) 18 6.3 Read identification (RDID) 19 6.4 Read status register (RDSR) 21 6.4.1 WIP bit 21 2/47 Downloaded fromDownloaded from Arrow.com.Arrow.com.