SST26WF040BA datasheet(32/96 Pages) MICROCHIP

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SST26WF040B/040BA SST26WF080B/080BA

DS20005283C-page 32

 2014-2017 Microchip Technology Inc.

5.30

Write-Status Register (WRSR)

The Write-Status Register (WRSR) command writes

new values to the Status 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.

The first cycle of data points to the Status register, the

second points to the Configuration register. See Fig-

ures 5-30 and 5-31.

FIGURE 5-30:

WRITE-STATUS-REGISTER AND WRITE CONFIGURATION REGISTER

SEQUENCE (SQI)

FIGURE 5-31:

WRITE-STATUS-REGISTER AND WRITE CONFIGURATION REGISTER

SEQUENCE (SPI)

20005283 F63.1

MODE 3

SCK

SIO[3:0]

CE#

C1 C0

MODE 0

H0 L0

MSN LSN

H0 L0

Status

Byte

Command

Config-

uration

Note: MSN = Most Significant

Nibble; LSN = Least

20005283 F64.1

MODE 3

HIGH IMPEDANCE

MODE 0

STATUS

76 54 3 2 10

MSB

MODE 3

SCK

CE#

MODE 0

0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7 8 9 10 11 121314 15

CONFIGURATION

76 54 3 2 10

MSB

16 17 18 19 20 21 22 23

Note: XX = Don’t Care

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