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GD25Q128CXIGX Datasheet(PDF) 31 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) 31 Page - ELM Electronics

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69 -
http://www.elm-tech.com
GD25Q128CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash
7.15. Quad Page Program (32H)
The Quad Page Program command is for programming the memory using four pins: IO0, IO1, IO2 and IO3.
To use Quad Page Program the Quad enable in status register Bit9 must be set (QE=1). A Write Enable (WREN)
command must previously have been executed to set the Write Enable Latch (WEL) bit before sending the
Page Program command. The quad Page Program command is entered by driving CS# Low, followed by the
command code (32H), three address bytes and at least one data byte on IO pins.
The command sequence is shown in Figure17. If more than 256 bytes are sent to the device, previously latched
data are discarded and the last 256 data bytes are guaranteed to be programmed correctly within the same page.
If less than 256 data bytes are sent to device, they are correctly programmed at the requested addresses without
having any effects on the other bytes of the same page. CS# must be driven high after the eighth bit of the last
data byte has been latched in; otherwise the Quad Page Program (PP) command is not executed.
As soon as CS# is driven high, the self-timed Quad Page Program cycle (whose duration is tPP) is initiated.
While the Quad Page Program 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 Quad Page Program
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 Quad Page Program command applied to a page which is protected by the Block Protect (BP4, BP3, BP2,
BP1 and BP0) is not executed.
Figure 16a. Page Program Sequence Diagram (QPI)
CS#
SCLK
IO0
IO1
IO2
IO3
0
1
2
3
4
5
Command
02H
20
12
16
8
6
7
8
9 10
4
4
0
0
4
0 4
0
21
13
17
9
5
5
1
1
5
1 5
1
22
14
18
10 6
6
2
2
6
2 6
2
23
15
19
11 7
7
3
3
7
3 7
3
A23-16 A15-8 A7-0
11 12 13
Byte1 Byte2
4
0 4
0
5
1 5
1
6
2 6
2
7
3 7
3
Byte3
Byte255 Byte256


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