IS25WP064A-RBLE datasheet(47/111 Pages) ISSI

47 / 111 page

IS25WP064A/032A

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

Rev. 00D

03/01/2016

8.11 SECTOR ERASE OPERATION (SER, D7h/20h)

A Sector Erase (SER) instruction erases a 4Kbyte sector. Before the execution of a SER instruction, the Write

Enable Latch (WEL) must be set via a Write Enable (WREN) instruction. The WEL bit is automatically reset after

the completion of Sector Erase operation.

A SER instruction is entered, after CE# is pulled low to select the device and stays low during the entire

instruction sequence The SER instruction code, and three address bytes are input via SI. Erase operation will

start immediately after CE# is pulled high. The internal control logic automatically handles the erase voltage and

timing.

During an erase operation, all instruction will be ignored except the Read Status Register (RDSR) instruction. The

progress or completion of the erase operation can be determined by reading the WIP bit in the Status Register

using a RDSR instruction.

If the WIP bit is “1”, the erase operation is still in progress. If the WIP bit is “0”, the erase operation has been

completed.

Figure 8.14 Sector Erase Sequence in SPI mode

Instruction = D7h/20h

CE #

SCK

3-byte Address

High Impedance

...

Mode 3

Mode 0

Figure 8.15 Sector Erase Sequence in QPI mode

D7h/20h

CE#

SCK

IO[3:0]

3-byte Address

Mode 3

Mode 0

23:20 19:16 15:12 11:8

7:4

3:0

IS25WP064A-RBLE Datasheet(PDF) 47 Page - Integrated Silicon Solution, Inc