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A25L080 датащи(PDF) 18 Page - AMIC Technology

номер детали A25L080
подробное описание детали  16Mbit Low Voltage, Serial Flash Memory With 100MHz Uniform 4KB Sectors
PDF  41 Pages
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производитель  AMICC [AMIC Technology]
домашняя страница  http://www.amictechnology.com
Logo AMICC - AMIC Technology

A25L080 датащи(HTML) 18 Page - AMIC Technology

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A25L016 Series
(April, 2008, Version 0.0)
17
AMIC Technology Corp.
Fast Read Dual Output (3Bh)
The Fast Read Dual Output (3Bh) instruction is similar to the
Fast Read (0Bh) instruction except the data is output on two
pins, DO and DIO, instead of just DO. This allows data to be
transferred from the A25L016 at twice the rate of standard
SPI devices.
Similar to the Fast Read instruction, the Fast Read Dual
Output instruction can operate at the highest possible
frequency
of
fC (See AC Characteristics). This is
accomplished by adding eight “dummy” clocks after the
24-bit address as shown in figure 10. The dummy clocks
allow the device’s internal circuits additional time for setting
up the initial address. The input data during the dummy
clocks is “don’t care”. However, the DIO pin should be
high-impedance prior to the falling edge of the first data out
clock.
Figure 10. FAST_READ_DUAL_OUTPUT Instruction Sequence and Data-Out Sequence
Instruction
High Impedance
MSB
810
9
01 2 3 4 5 6 7
24-Bit Address
28 29 30 31
23 22 21
3 21 0
7
0
S
C
DIO
DO
S
C
DIO
DO
32 33 34 35 36 37 38 39
65 4
1
7
3
40 41 42 43 44 45 46 47
20
Dummy Byte
MSB
1
MSB
7 5 31 75 3
MSB
7 5 31 75 3 1
6 4 2 0 6 4 2 0 6 4 2 0 6 4 2 0
Data Out 1
Data Out 2
Data Out 3
Data Out 4
DIO switches from input to output
Note:. Address bits A23 to A21 are Don’t Care, for A25L016
.



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