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S25FL128K View Datasheet(PDF) - Spansion Inc.

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S25FL128K Datasheet PDF : 59 Pages
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Data Sheet (Preliminary)
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 FR (see See AC Electrical Characteristics on page 54.). This is accomplished by
adding eight “dummy” clocks after the 24-bit address as shown in Figure 6.9. The dummy clocks allow the
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”.
Figure 6.9 Fast Read Instruction Sequence Diagram
CS#
Mode 3
CLK Mode 0
SI
0 1 2 3 4 5 6 7 8 9 10 28 29 30 31
Instruction (0Bh)
24-Bit Address
23 22 21 3 2 1 0
SO
CS#
CLK
SI
SO
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47
Dummy Byte
76 54321 0
Data Out 1
Data Out 2
76 54321 0 76 54321 07
= MSB
April 1, 2011 S25FL128K_00_02
S25FL128K
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