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GD25LB32D Datasheet(Arkusz danych) 51 Page - GigaDevice Semiconductor (Beijing) Inc.

Numer części GD25LB32D
Szczegółowy opis  1.8V Uniform Sector Dual and Quad Serial Flash
Pobierz  67 Pages
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Producent  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Strona internetowa  http://www.gigadevice.com/
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 51 page
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1.8V Uniform Sector
Dual and Quad Serial Flash
GD25LB32D
51
7.34.
Burst Read with Wrap (0CH)
The
“Burst Read with Wrap (0CH)” command provides an alternative way to perform the read operation with “Wrap
Around
” in QPI mode. This command is similar to the “Fast Read (0BH)” command in QPI mode, except the addressing of
the read operation will
“Wrap Around” to the beginning boundary of the “Wrap Around” once the ending boundary is
reached. The
“Wrap Length” and the number of dummy clocks can be configured by the “Set Read Parameters (C0H)”
command.
Figure34. Burst Read with Wrap command Sequence Diagram
CS#
SCLK
IO0
IO1
IO2
IO3
0
1
2
3
4
5
Command
0CH
20
12
16
8
6
7
8
9
10
4
0
4
0
4
0
4
21
13
17
9
5
1
5
1
5
1
5
22
14
18
10
6
2
6
2
6
2
6
23
15
19
11
7
3
7
3
7
3
7
A23-16
A15-8
A7-0
Dummy*
11
12 13
14
IOs switch from
Input to output
Byte1
Byte2
Byte3
*"Set Read Parameters" Command (C0H)
can set the number of dummy clocks
7.35.
Enable QPI (38H)
The device support both Standard/Dual/Quad SPI and QPI mode. The
“Enable QPI (38H)” command can switch the
device from SPI mode to QPI mode. See the command Table 2a for all support QPI commands. In order to switch the
device to QPI mode, the
“Enable QPI (38H)” command must be issued. When the device is switched from SPI mode to QPI
mode, the existing Write Enable Latch and Program/Erase Suspend status, and the Wrap Length setting will remain
unchanged.
Figure35. Enable QPI mode command Sequence Diagram
Command
0
1
2
3
4
5
6
7
38H
CS#
SCLK
SI




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