S25FL128K Meet Spansion Inc., S25FL128K Datasheet - Page 23

• Manufacturer Part Number: S25FL128K
• Description: 128-mbit Cmos 3.0 Volt Flash Memory With 104-mhz Spi Serial Peripheral Interface Multi I/o Bus
• Manufacturer: Meet Spansion Inc.

April 1, 2011 S25FL128K_00_02
6.2.7
Fast Read (0Bh)
The Fast Read instruction is similar to the Read Data instruction except that it can operate at the highest
possible frequency of F
adding eight “dummy” clocks after the 24-bit address as shown in
devices internal circuits additional time for setting up the initial address. During the dummy clocks the data
value on the SO pin is a “don’t care”.
CLK
CS#
CLK
CS#
SO
SO
SI
SI
= MSB
Mode 3
Mode 0
D a t a
7
32
6
0
33 34 35
1
5
Dummy Byte
S h e e t
Instruction (0Bh)
2
4
R
(see
3
3
36 37
Figure 6.9 Fast Read Instruction Sequence Diagram
2
See AC Electrical Characteristics on page
4
1
( P r e l i m i n a r y )
5
38 39 40 41
0
6
S25FL128K
7
7
23
6
8
22 21
9
42
5
Data Out 1
24-Bit Address
10
4
43 44
3
3
28 29
2
45 46 47
2
1
1
30 31
Figure
0
0
7
54.). This is accomplished by
6.9. The dummy clocks allow the
6
5
Data Out 2
4
3
2
1
0
7
23