1 Mbit SPI Serial Flash
SST25VF010A
Data Sheet
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 pro-
tected memory area will be ignored.
Program instruction is initiated by executing an 8-bit com-
mand, 02H, followed by address bits [A23-A0]. Following the
address, the data is input in order from MSB (bit 7) to LSB
(bit 0). CE# must be driven high before the instruction is
executed. The user may poll the Busy bit in the software
status register or wait TBP for the completion of the internal
self-timed Byte-Program operation. See Figure 6 for the
Byte-Program sequence.
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-
CE#
MODE 3
0
1
2
3
4
5
6
7
8
15 16
23
31
39
24
32
MODE 0
SCK
02
ADD.
MSB
ADD.
ADD.
D
IN
MSB LSB
SI
MSB
HIGH IMPEDANCE
SO
1265 F06.0
FIGURE 6: BYTE-PROGRAM SEQUENCE
©2006 Silicon Storage Technology, Inc.
S71265-02-000
1/06
11
SST [ SILICON STORAGE TECHNOLOGY, INC ]
