W25Q128FVCIP datasheet(51/97 Pages) WINBOND

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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

Instruction (32h)

24-Bit Address

/CS

CLK

Byte 1

Byte 2

Byte 3

Byte

256

Mode 0

Mode 3

Byte

253

Byte

254

Byte

255

***

****

= MSB

Figure 30. Quad Input Page Program Instruction (SPI Mode only)

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