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GD25Q128CXIGX Datasheet(PDF) 33 Page - ELM Electronics

No. de pieza GD25Q128CXIGX
Descripción Electrónicos  3.3V Uniform Sector Dual and Quad Serial Flash
PDF  69 Pages
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Fabricante Electrónico  ELM [ELM Electronics]
Página de inicio  http://www.elmelectronics.com
Logo ELM - ELM Electronics

GD25Q128CXIGX Datasheet(HTML) 33 Page - ELM Electronics

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33
Rev.1.2
69 -
http://www.elm-tech.com
GD25Q128CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
7.16. Sector Erase (SE) (20H)
The Sector Erase (SE) command is erased the all data of the chosen sector. A Write Enable (WREN) command
must previously have been executed to set the Write Enable Latch (WEL) bit. The Sector Erase (SE) command
is entered by driving CS# low, followed by the command code, and 3-address byte on SI. Any address inside the
sector is a valid address for the Sector Erase (SE) command. CS# must be driven low for the entire duration of
the sequence.
The Sector Erase command sequence: CS# goes low → sending Sector Erase command → 3-byte address on
SI → CS# goes high. The command sequence is shown in Figure18. CS# must be driven high after the eighth bit
of the last address byte has been latched in; otherwise the Sector Erase (SE) command is not executed. As soon
as CS# is driven high, the self-timed Sector Erase cycle (whose duration is tSE) is initiated. While the Sector
Erase cycle is in progress, the Status Register may be read to check the value of the Write In Progress (WIP) bit.
The Write In Progress (WIP) bit is 1 during the self-timed Sector Erase cycle, and is 0 when it is completed. At
some unspecified time before the cycle is completed, the Write Enable Latch (WEL) bit is reset. A Sector Erase
(SE) command applied to a sector which is protected by the Block Protect (BP4, BP3, BP2, BP1 and BP0) bit is
not executed.
Figure 18. Sector Erase Sequence Diagram
Command
0 1 2 3 4 5 6 7
20H
CS#
SCLK
SI
8 9
29 30 31
MSB
2 1 0
24 Bits Address
23 22
Figure 18a. Sector Erase Sequence Diagram (QPI)
CS#
SCLK
IO0
IO1
IO2
IO3
0
1
2
3
4
5
Command
20H
20
12
16
8
A23-16 A12-8
6
7
0
21
13
17
9
1
23
15
19
11
3
22
14
18
10
2
4
5
6
7
A7-0


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