SST25VF032B Silicon Storage Technology, Inc., SST25VF032B Datasheet - Page 15

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

32 Mbit SPI Serial Flash
SST25VF032B
32-KByte and 64-KByte Block-Erase
The 32-KByte Block-Erase instruction clears all bits in the
selected 32 KByte block to FFH. A Block-Erase instruction
applied to a protected memory area will be ignored. The
64-KByte Block-Erase instruction clears all bits in the
selected 64 KByte block to FFH. A Block-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 32-Kbyte Block-
Erase instruction is initiated by executing an 8-bit com-
mand, 52H, followed by address bits [A
[A
©2008 Silicon Storage Technology, Inc.
MS
FIGURE 14: 32-KByte Block-Erase Sequence
FIGURE 15: 64-KByte Block-Erase Sequence
-A
15
] (A
MS
= Most Significant Address) are used to
SCK
SCK
CE#
CE#
SO
SO
SI
SI
MODE 3
MODE 0
MODE 3
MODE 0
23
-A
0
]. Address bits
MSB
MSB
0 1 2 3 4 5 6 7 8
0 1 2 3 4 5 6 7 8
D8
52
HIGH IMPEDANCE
HIGH IMPEDANCE
15
MSB
MSB
determine block address (BA
be V
is executed. The 64-Kbyte Block-Erase instruction is initi-
ated by executing an 8-bit command D8H, followed by
address bits [A
determine block address (BA
be V
is executed. Poll the Busy bit in the software status register
or wait T
KByte Block-Erase or 64-KByte Block-Erase cycles. See
Figure 14 for the 32-KByte Block-Erase sequence and Fig-
ure 15 for the 64-KByte Block-Erase sequence.
ADDR
ADDR
IL
IL
15 16
15 16
or V
or V
BE
ADDR
ADDR
IH.
IH.
for the completion of the internal self-timed 32-
CE# must be driven high before the instruction
CE# must be driven high before the instruction
23 24
23 24
23
1327 63KBlkEr.0
-A
1327 32KBklEr.0
ADDR
ADDR
0
]. Address bits [A
31
31
X
X
), remaining address bits can
), remaining address bits can
Advance Information
MS
S71327-01-000
-A
15
] are used to
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