AT25SL321 datasheet(35/82 Pages) DIALOG

Part #	AT25SL321

Description	32-Mbit, 1.7 V Minimum SPI Serial Flash Memory with Dual I/O, Quad I/O and QPI Support

PDF	82 Pages

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Manufacturer	DIALOG [Dialog Semiconductor]

Direct Link	http://www.dialog-semiconductor.com/

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35 / 82 page

AT25SL321

DS-25SL321–112H–2020-10

8.16 Quad Page Program (33h)

The Quad Page Program instruction is to program the memory as being ‘0’ at previously erased memory areas.

The Quad Page Program takes four pins: IO0, IO1, IO2 and IO3 as address and data input, which can improve

programmer performance and the effectiveness of application of lower clock less than 5 MHz. System using faster

clock speed does not get more benefit for the Quad Page Program as the required internal page program time is

far more than the time data clock-in.

To use Quad Page Program, the Quad Enable bit must be set, A Write Enable instruction must be executed

before the device accepts the Quad Page Program instruction (Status Register-1, WEL = 1). The instruction is

initiated by driving the CS pin low then sending the instruction code 33h with following a 24-bit address (A23-A0)

and at least one data, 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 perfectly same as standard

Page Program. (See Figure 8-24 and Figure 8-25).

Figure 8-24. Quad Page Program Instruction (SPI mode)

AT25SL321 Datasheet(PDF) 35 Page - Dialog Semiconductor