Datasheet

 2013-2016 Microchip Technology Inc. DS20005218E-page 37
SST26VF032B / SST26VF032BA
5.35 Lock-Down Block-Protection
Register (LBPR)
The Lock-Down Block-Protection Register instruction
prevents changes to the Block-Protection register
during device operation. Lock-Down resets after power
cycling; this allows the Block-Protection register to be
changed. Execute WREN before initiating the Lock-
Down Block-Protection Register instruction.
To execute a Lock-Down Block-Protection Register, the
host drives CE# low, then sends the Lock-Down Block-
Protection Register command cycle (8DH), then drives
CE# high.
FIGURE 5-40: LOCK-DOWN BLOCK-PROTECTION REGISTER (SQI)
FIGURE 5-41: LOCK-DOWN BLOCK-PROTECTION REGISTER (SPI)
20005218 F30.1
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
Note: C[1:0]=8DH
20005218 F67.0
MODE 3 0 1
SCK
SIO0
CE#
MODE 0
234567
8D
SIO[3:1]