n25q256 Numonyx, n25q256 Datasheet - Page 73

• 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

N25Q256 - 3 V
9.1.9
DQ0
DQ0
DQ1
DQ1
C
S
C
S
Dual I/O Fast Read
The Dual I/O Fast Read (DIOFR) instruction is very similar to the Dual Output Fast Read
(DOFR), except that the address bits are shifted in on two pins (pin DQ0 and pin DQ1)
instead of only one.
If 4-byte address mode is enabled, the device uses a 32-bit address as explained and
shown in
Figure 26. Dual I/O Fast Read Instruction Sequence
Mode 3
Mode 0
27 28 29
IO switches from Input to Output
Section 5.1.2: 4 Byte Address Mode on page 25
6
7
Byte 1
4
5
0
30
2
3
1
31 32 33 34 35 36 37 38 39 40 41
0
1
2
Instruction
6
7
3
Byte 2
4
5
4
2
3
5
0
1
6
6
7
7
4
5
22 20 18 16
23 21 19 17 15 13 11 9
Byte 3
8
2
3
Micron Technology, Inc., reserves the right to change products or specifications without notice.
9 10 11 12 13 14
0
1
6
7
24-bit Address
4
Byte 4
5
14 12 10 8
42
2
3
43
0
1
7
6
15 16 17 18 19 20
6
7
©2010 Micron Technology, Inc. All rights reserved.
4
5
2
3
0
1
Dummy Cycles
Instructions
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