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■ FSV1 (bits 15 to 0)
The setting of the Flash Security Vector FSV1 bits [15:0] is responsible for the individual write protection of the
8 kByte sectors. It is only evaluated if write protection bit FSV1[17] is set.
Explanation of the bits in the Flash Security Vector FSV1[15:0] (valid for MB91F467DA):
FSV1 bit
Sector
FSV1[0]
SA0
FSV1[1]
SA1
FSV1[2]
SA2
FSV1[3]
SA3
FSV1[4]
SA4
FSV1[5]
SA5
FSV1[6]
SA6
FSV1[7]
SA7
FSV1[8]
-
FSV1[9]
-
FSV1[10]
-
FSV1[11]
-
FSV1[12]
-
FSV1[13]
-
FSV1[14]
-
FSV1[15]
-
Remark: It is mandatory to always set the sector where the Flash Security Vectors FSV1 and FSV2 are
located to write protected (here sector SA4). Otherwise it is possible to overwrite the Security Vector
to a setting where it is possible to either read out the flash content or manipulate data by writing.
Remark: The content of the security vector FSV1[15:0] depends on the size and the data width configuration
of the embedded flash memory. Therefore always check the appropriate datasheet if the data shown here are
valid for the product you are using.
See
Chapter 54 Flash Memory (Page No.993)
Memory.
Enable
Disable
Write
Write
Protection
Protection
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
-
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
set to '0'
set to '1'
for an overview about the sector organisation of the Flash
Chapter 55 Flash Security
Comment
Write protection is mandatory !
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3.Flash Security Vectors
1011
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