Datasheet
SST26VF032B / SST26VF032BA
DS20005218E-page 32 2013-2016 Microchip Technology Inc.
5.30 Write-Status Register (WRSR)
The Write-Status Register (WRSR) command writes
new values to the Configuration register. To execute a
Write-Status Register operation, the host drives CE#
low, then sends the Write-Status Register command
cycle (01H), two cycles of data, and then drives CE#
high. Values in the second data cycle will be accepted
by the device. See Figures 5-30 and 5-31.
FIGURE 5-30: WRITE-STATUS-REGISTER SEQUENCE (SQI)
FIGURE 5-31: WRITE-STATUS-REGISTER SEQUENCE (SPI)
20005218 F63.1
MODE 3 0 1
SCK
SIO[3:0]
CE#
C1 C0
MODE 0
2
XX XX
MSN
LSN
4
H0 L0
5
3
Status
Byte
Command
Config-
uration
Byte
Note: MSN = Most Significant Nibble; LSN = Least Significant Nibble, XX = Don’t Care, C[1:0]=01H
20005218 F64.2
MODE 3
HIGH IMPEDANCE
MODE 0
S TAT U S
REGISTER
XX
MSBMSB
01
SCK
SI
SO
CE#
0 1 2 3 4 5 6 7 8 9 101112131415
CONFIGURATION
REGISTER
76543210
MSB
16 17 18 19 20 21 22 23
XX XX XX XX XX XX XX
Note: XX = Don’t Care