n25q256 Numonyx, n25q256 Datasheet - Page 2

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n25q256

Manufacturer Part Number
n25q256
Description
256-mbit 3 V, Multiple I/o, 4-kbyte Subsector Erase, Xip Enabled, Serial Flash Memory With 108 Mhz Spi Bus Interface
Manufacturer
Numonyx
Datasheet

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Contents
Contents
1
2
3
4
5
2/186
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
SPI Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SPI Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.1
4.2
4.3
4.4
4.5
Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1
5.2
Serial data output (DQ1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Serial data input (DQ0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Serial Clock (C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chip Select (S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Hold (HOLD) or Reset (Reset) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Write protect/enhanced program supply voltage (W/VPP), DQ2 . . . . . . . 18
V
V
Selecting and Enabling a Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Exiting DIO-SPI or QIO-SPI Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Extended SPI protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Dual I/O SPI (DIO-SPI) protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Quad SPI (QIO-SPI) protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Requirements for 256 Mb Address Space . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1.1
5.1.2
5.1.3
Extended SPI Protocol Operating features . . . . . . . . . . . . . . . . . . . . . . . 28
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
CC
SS
ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3 Byte Address Mode (Segmentation) . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4 Byte Address Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Instructions Not Affected by Addressing Mode . . . . . . . . . . . . . . . . . . . 28
Read Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Page programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Dual Input Fast Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Dual Input Extended Fast Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Quad Input Fast Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Quad Input Extended Fast Program . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2010 Micron Technology, Inc. All rights reserved.
N25Q256 - 3 V

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