IS25LQ040(2012) 데이터 시트보기 (PDF) - Integrated Silicon Solution

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IS25LQ040
(Rev.:2012)

4 Mbit Single Operating Voltage Serial Flash Memory With 104 MHz Dual- or 100MHz Quad-Output SPI Bus Interface

Integrated Silicon Solution 

IS25LQ040

DEVICE OPERATION (CONTINUED)

RDSR COMMAND (READ STATUS REGISTER) OPERATION

The Read Status Register (RDSR) instruction provides

access to the Status Register. During the execution of

a program, erase or write status register operation, all

other instructions will be ignored except the RDSR

instruction, which can be used to check the progress or

completion of an operation by reading the WIP bit of

Status Register.

Figure 8. Read Status Register Sequence

WRSR COMMAND (WRITE STATUS REGISTER) OPERATION

The Write Status Register (WRSR) instruction allows

the user to enable or disable the block protection and

status register write protection features by writing “0”s

or “1”s into the non-volatile BP3, BP2, BP1, BP0 and

SRWD bits.

Figure 9. Write Status Register Sequence

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

Rev. A

16

09/13/2012

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