MB91F467DA datasheet(39/137 Pages) CYPRESS

39 / 137 page

Document Number: 002-04613 Rev. *A

Page 39 of 137

MB91460D Series

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.

Explanation of the bits in the Flash Security Vector FSV1 [15:0]

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 Memor

FSV1 bit

Sector

Enable Write Pro-

tection

Disable Write Pro-

tection

Comment

FSV1[0]

SA0 (MB91F467Dx)

set to “0”

set to “1”

FSV1[1]

SA1 (MB91F467Dx)

set to “0”

set to “1”

FSV1[2]

SA2 (MB91F467Dx)

set to “0”

set to “1”

FSV1[3]

SA3 (MB91F467Dx)

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

MB91F467DA датащи(PDF) 39 Page - Cypress Semiconductor

MB91F467DA датащи(HTML) 39 Page - Cypress Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL