IS25LP256D-RGLA3 datasheet(73/174 Pages) ISSI

73 / 174 page

IS25LP256D

IS25WP256D

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

Rev A6

04/15/2019

8.10 PAGE PROGRAM OPERATION (PP, 02h or 4PP, 12h)

The Page Program (PP/4PP) instruction allows up to 256 bytes data to be programmed into memory in a single

operation. The destination of the memory to be programmed must be outside the protected memory area set by

the Block Protection bits (BP3, BP2, BP1, BP0) or ASP. A PP/4PP instruction which attempts to program into a

page that is write-protected will be ignored. Before the execution of PP/4PP instruction, the Write Enable Latch

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

 02h (EXTADD=0) is followed by a 3-byte address (A23-A0) or

 02h (EXTADD=1) is followed by a 4-byte address (A31-A0) or

 12h is followed by a 4-byte address (A31-A0)

The PP/4PP instruction code, three or four address bytes as above and program data (1 to 256 bytes) are input via

the SI line. Program operation will start immediately after the CE# is brought high, otherwise the PP/4PP 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. 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 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, but an erase operation is required to change “0”s back to “1”s. A

byte cannot be reprogrammed without first erasing the whole sector or block.

IS25LP256D-RGLA3 Datasheet(PDF) 73 Page - Integrated Silicon Solution, Inc