Serial Quad I/O (SQI) Flash Memory
SST26VF016 / SST26VF032
Data Sheet
Lockdown Block-Protection Register (LBPR)
The Lockdown Block-Protection Register instruction prevents changes to the Block-Protection Regis-
ter. Lockdown resets after power cycling; this allows the Block-Protection Register to be changed.
To execute a Lockdown Block-Protection Register, the host drives CE# low, then sends the Lockdown
Block-Protection Register command cycle (8DH), then drives CE# high. A cycle is two nibbles long,
most significant nibble first.
CE#
MODE 3
MODE 0
0
1
SCK
SIO(3:0)
C1 C0
1359 F30.0
Note: C[1:0]=8DH
Figure 24:Lockdown Block-Protection Register
©2010 Silicon Storage Technology, Inc.
S71359-05-000
06/10
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