©2012 Silicon Storage Technology, Inc.

DS25024C

10/12

14

8 Mbit 1.8V SPI Serial Flash

SST25WF080

Not Recommended for New Designs

Byte-Program

The Byte-Program instruction programs the bits in the selected byte to the desired data. The selected

byte must be in the erased state (FFH) when initiating a Program operation. A Byte-Program instruction

applied to a protected memory area will be ignored.

Prior to any Write operation, the Write-Enable (WREN) instruction must be executed. CE# must remain

active low for the duration of the Byte-Program instruction. The Byte-Program instruction is initiated by

input in order from MSB (bit 7) to LSB (bit 0). CE# must be driven high before the instruction is exe-

the internal self-timed Byte-Program operation. See Figure 9 for the Byte-Program sequence.

Figure 9: Byte-Program Sequence

1203 F08.0

CE#

SO

SI

SCK

ADD.

012

34

5

6

7

8

ADD.

ADD.

02

HIGH IMPEDANCE

15 16

23 24

31 32

39

MSB

LSB

MODE 3

MODE 0

MSB