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MB91F465KB Datasheet(PDF) 33 Page - Cypress Semiconductor

Part # MB91F465KB
Description  32-bit RISC, load/store architecture, five-stage pipeline
PDF  86 Pages
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

MB91F465KB Datasheet(HTML) 33 Page - Cypress Semiconductor

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MB91460K Series
Document Number: 002-04602 Rev. *A
Page 33 of 86
86
9.6.2.2 FSV1 (bit15 to bit0)
The setting of the Flash Security Vector FSV1 bits [15:0] is responsible for the individual write protection of the 8 Kbytes sectors. It
is only evaluated if write protection bit FSV1[17] is set.
Table 3: Explanation of the bits in the Flash Security Vector FSV1 [15:0]:
MB91F465Kx:
Note: 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.See section “Flash access in CPU mode” for an overview about the sector organisation of the
Flash Memory.
FSV1 bit
Sector
Enable Write Pro-
tection
Disable Write Pro-
tection
Comment
FSV1[0]
-
set to “0”
set to “1”
not available
FSV1[1]
-
set to “0”
set to “1”
not available
FSV1[2]
-
set to “0”
set to “1”
not available
FSV1[3]
-
set to “0”
set to “1”
not available
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



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