64 Mbit SPI Serial Dual I/O Flash
SST25VF064C
Data Sheet
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
address bits A23-A0. Address bits AMS-A12 (AMS = Most
Significant address) are used to determine the sector
address (SAX), remaining address bits can be VIL or VIH.
CE# must be driven high before the instruction is executed.
Poll the Busy bit in the software status register or wait TSE
for the completion of the internal self-timed Sector-Erase
cycle. See Figure 12 for the Sector-Erase sequence.
CE#
MODE 3
0
1
2
3
4
5
6
7
8
15 16
23
31
24
MODE 0
SCK
20
ADD.
MSB
ADD.
ADD.
SI
MSB
HIGH IMPEDANCE
SO
1392 F13.0
FIGURE 12: Sector-Erase Sequence
©2010 Silicon Storage Technology, Inc.
S71392-04-000
04/10
15
SST [ SILICON STORAGE TECHNOLOGY, INC ]
