SST25VF032B Silicon Storage Technology, Inc., SST25VF032B Datasheet - Page 14

• Manufacturer Part Number: SST25VF032B
• Description: 32 Mbit Spi Serial Flash
• Manufacturer: Silicon Storage Technology, Inc.

Advance Information
Sector-Erase
The Sector-Erase instruction clears all bits in the selected 4
KByte sector to FFH. A Sector-Erase 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
any command sequence. The Sector-Erase instruction is
initiated by executing an 8-bit command, 20H, followed by
©2008 Silicon Storage Technology, Inc.
FIGURE 13: Sector-Erase Sequence
SCK
CE#
SO
SI
MODE 3
MODE 0
0 1 2 3 4 5 6 7 8
20
HIGH IMPEDANCE
14
address bits [A
Significant address) are used to determine the sector
address (SA
CE# must be driven high before the instruction is executed.
Poll the Busy bit in the software status register or wait T
for the completion of the internal self-timed Sector-Erase
cycle. See Figure 13 for the Sector-Erase sequence.
ADD.
15 16
X
ADD.
), remaining address bits can be V
23
23 24
-A
0
]. Address bits [A
ADD.
32 Mbit SPI Serial Flash
1327 F13.0
31
MS
SST25VF032B
-A
S71327-01-000
12
] (A
MS
IL
= Most
or V
4/08
SE
IH.