IS25LP032D-RKLA3 datasheet(50/118 Pages) ISSI

50 / 118 page

IS25LP032D

IS25WP032D

Integrated Silicon Solution, Inc.- www.issi.com

Rev. A12

08/04/2020

8.9 QUAD INPUT PAGE PROGRAM OPERATION (PPQ, 32h/38h)

The Quad Input Page Program instruction allows up to 256 bytes data to be programmed into memory in a single

operation with four pins (IO0, IO1, IO2 and IO3). The destination of the memory to be programmed must be outside

the protected memory area set by the Block Protection (BP3, BP2, BP1, BP0) bits. A Quad Input Page Program

instruction which attempts to program into a page that is write-protected will be ignored.

Before the execution of Quad Input Page Program instruction, the QE bit in the Status Register

must be set to “1”

and the Write Enable Latch (WEL) must be enabled through a Write Enable (WREN) instruction.

Program operation will start immediately after the CE# is brought high, otherwise the Quad Input Page Program

instruction will not be executed. The internal control logic automatically handles the programming voltages and

timing. The progress or completion of the program operation can be determined by reading the WIP bit in Status

Register via a RDSR instruction. If the WIP bit is “1”, the program operation is still in progress. If WIP bit is “0”, the

program operation has completed.

If more than 256 bytes data are sent to a device, the address counter rolls over within the same page, the previously

latched data are discarded, and the last 256 bytes data are kept to be programmed into the page. The starting byte

can be anywhere within the page. When the end of the page is reached, the address will wrap around to the

beginning of the same page. If the data to be programmed are less than a full page, the data of all other bytes on

the same page will remain unchanged.

Note: A program operation can

alter “1”s into “0”s. The same byte location or page may be programmed more than

once, to incrementally change

“1”s to “0”s. An erase operation is required to change “0”s to “1”s.

Figure 8.13 Quad Input Page Program Sequence

Instruction = 32h/38h

CE #

SCK

3-byte Address

High Impedance

...

Mode 3

Mode 0

IO0

IO1

Data In 2

IO2

IO3

...

Data In 1

...

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