16 Mbit Single Operating Voltage Serial Flash Memory With 104
MHz Dual- or 100MHz Quad-Output SPI Bus Interface
IS25LQ016
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
09/20/2012
17