Datasheet

 2013-2016 Microchip Technology Inc. DS20005218E-page 35
SST26VF032B / SST26VF032BA
5.33 Read Block-Protection Register
(RBPR)
The Read Block-Protection Register instruction outputs
the Block-Protection register data which determines
the protection status. To execute a Read Block-Protec-
tion Register operation, the host drives CE# low, and
then sends the Read Block-Protection Register com-
mand cycle (72H). A dummy cycle is required in SQI
mode.
After the command cycle, the device outputs data on
the falling edge of the SCK signal starting with the most
significant bit(s), see Table 5-6 for definitions of each bit
in the Block-Protection register. The RBPR command
does not wrap around. After all data has been output,
the device will output 0H until terminated by a low-to-
high transition on CE#. Figures 5-36 and 5-37.
FIGURE 5-36: READ BLOCK-PROTECTION REGISTER SEQUENCE (SQI)
FIGURE 5-37: READ BLOCK-PROTECTION REGISTER SEQUENCE (SPI)
20005218 F34.2
MODE 3 0
SCK
SIO[3:0]
CE#
C1 C0
2
H0 L0
MSN
LSN
4
H1 L1
6
H2 L2
8
H3 L3
10
H4 L4
12
HN LN
BPR [m:m-7]
BPR [7:0]
XX
Note: MSN = Most Significant Nibble, LSN = Least Significant Nibble
Block-Protection Register (BPR), m = 79 for SST26VF032B/032BA, C[1:0]=72H
CE#
SIO0
SCK
012345678
32 33
24
MODE 3
MODE 0
15 16 23
72H
20005218 F48.0
SIO
OP Code
Data Byte 0
Data Byte 1
Data Byte 2
Data Byte N