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W25Q128FVSIG Datasheet(PDF) 51 Page - Winbond

Part No. W25Q128FVSIG
Description  3V 128M-BIT SERIAL FLASH MEMORY WITH DUAL/QUAD SPI & QPI
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Maker  WINBOND [Winbond]
Homepage  http://www.winbond.com
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W25Q128FV
Publication Release Date: October 01, 2012
- 50 -
Revision D
8.2.16 Quad Input Page Program (32h)
The Quad Page Program instruction allows up to 256 bytes of data to be programmed at previously
erased (FFh) memory locations using four pins: IO0, IO1, IO2, and IO3. The Quad Page Program can
improve performance for PROM Programmer and applications that have slow clock speeds <5MHz.
Systems with faster clock speed will not realize much benefit for the Quad Page Program instruction since
the inherent page program time is much greater than the time it take to clock-in the data.
To use Quad Page Program the Quad Enable (QE) bit in Status Register-2 must be set to 1. A Write
Enable instruction must be executed before the device will accept the Quad Page Program instruction
(Status Register-1, WEL=1). The instruction is initiated by driving the /CS pin low then shifting the
instruction code “32h” followed by a 24-bit address (A23-A0) and at least one data byte, into the IO pins.
The /CS pin must be held low for the entire length of the instruction while data is being sent to the device.
All other functions of Quad Page Program are identical to standard Page Program. The Quad Page
Program instruction sequence is shown in Figure 30.
/CS
CLK
Mode 0
Mode 3
0
1
2
3
4
5
6
7
Instruction (32h)
8
9
10
28
29
30
32
33
34
35
36
37
4
0
24-Bit Address
23
22
21
3
2
1
0
*
31
31
/CS
CLK
5
1
Byte 1
6
2
7
3
4
0
5
1
6
2
7
3
4
0
5
1
6
2
7
3
4
0
5
1
6
2
7
3
Byte 2
Byte 3
Byte
256
0
4
0
5
1
6
2
7
3
4
0
5
1
6
2
7
3
4
0
5
1
6
2
7
3
Mode 0
Mode 3
Byte
253
Byte
254
Byte
255
IO
0
IO
1
IO
2
IO
3
IO
0
IO
1
IO
2
IO
3
***
****
= MSB
*
Figure 30. Quad Input Page Program Instruction (SPI Mode only)




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