Datasheet

 2015 Microchip Technology Inc. DS20005119G-page 39
SST26VF064B / SST26VF064BA
5.37 Global Block-Protection Unlock
(ULBPR)
The Global Block-Protection Unlock (ULBPR) instruc-
tion clears all write-protection bits in the Block-Protec-
tion register, except for those bits that have been
locked down with the nVWLDR command. Execute
WREN before initiating the ULBPR instruction.
To execute a ULBPR instruction, the host drives CE#
low, then sends the ULBPR command cycle (98H), and
then drives CE# high.
FIGURE 5-44: GLOBAL BLOCK-PROTECTION UNLOCK (SQI)
FIGURE 5-45: GLOBAL BLOCK-PROTECTION UNLOCK (SPI)
25119 F20.1
MODE 3 0 1
SCK
SIO(3:0)
CE#
C1 C0
MODE 0
Note: C[1:0]=98H
25119 F68.0
MODE 3 0 1
SCK
SIO0
CE#
MODE 0
234567
98
SIO[3:1]