Filter
Top Products
1011
Chapter 55 Flash Security
3.Flash Security Vectors
■ 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):
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) for an overview about the sector organisation of the Flash
Memory.
FSV1 bit Sector Enable
Write
Protection
Disable
Write
Protection
Comment
FSV1[0] SA0 set to ‘0’ set to ‘1’
FSV1[1] SA1 set to ‘0’ set to ‘1’
FSV1[2] SA2 set to ‘0’ set to ‘1’
FSV1[3] SA3 set to ‘0’ set to ‘1’
FSV1[4] SA4 set to ‘0’ - Write protection is mandatory !
FSV1[5] SA5 set to ‘0’ set to ‘1’
FSV1[6] SA6 set to ‘0’ set to ‘1’
FSV1[7] SA7 set to ‘0’ set to ‘1’
FSV1[8] - set to ‘0’ set to ‘1’ not available
FSV1[9] - set to ‘0’ set to ‘1’ not available
FSV1[10] - set to ‘0’ set to ‘1’ not available
FSV1[11] - set to ‘0’ set to ‘1’ not available
FSV1[12] - set to ‘0’ set to ‘1’ not available
FSV1[13] - set to ‘0’ set to ‘1’ not available
FSV1[14] - set to ‘0’ set to ‘1’ not available
FSV1[15] - set to ‘0’ set to ‘1’ not available