N25Q032A13E1241F Datasheet, PDF (32/153 Pages) Micron Technology – 32-Mbit 3 V, multiple I/O, 4-Kbyte subsector erase, XiP enabled, serial flash memory with 108 MHz SPI bus interface

Volatile and Non Volatile Registers
N25Q032 - 3 V
Figure 8. Non Volatile and Volatile configuration Register Scheme
NVCR
(Non Volatile Configuratio n Register)
VCR (Volatile Co nfiguratio n Register)
and VECR (Volatile Enhanced
Co nfiguratio n Register)
Register download executed only
during the power on phase
Registers download executed after
a WRVCR or WRVECR
instructions, it overwrites NVCR
configurations on iCR
iCR
(internal Configuration Register)
Device behaviour
A Flag Status Register (FSR), 8 bits, is also available to check the status of the device,
detecting possible errors or a Program/Erase internal cycle in progress.
Each register can be read and modified by means of dedicated instructions in all the 3
protocols (Extended SPI, DIO-SPI, and QIO-SPI).
Reading time for all registers is comparable; writing time instead is very different: NVCR bits
are set as Flash Cell memory content requiring a longer time to perform internal writing
cycles. See Table 31.: AC Characteristics.
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