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MB91F465KB 数据表(PDF) 32 Page - Cypress Semiconductor

部件名 MB91F465KB
功能描述  32-bit RISC, load/store architecture, five-stage pipeline
PDF  86 Pages
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制造商  CYPRESS [Cypress Semiconductor]
网页  http://www.cypress.com
标志 CYPRESS - Cypress Semiconductor

MB91F465KB 数据表(HTML) 32 Page - Cypress Semiconductor

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MB91460K Series
Document Number: 002-04602 Rev. *A
Page 32 of 86
86
9.5
Power on Sequence in Parallel Programming Mode
The flash memory can be accessed in programming mode after a certain wait time, which is needed for Security Vector fetch:
■ Minimum wait time after VDD5/VDD5R power on: 2.76 ms
■ Minimum wait time after INITX rising: 1.0 ms
9.6
Flash Security
9.6.1
Vector addresses
Two Flash Security Vectors (FSV1, FSV2) are located parallel to the Boot Security Vectors (BSV1, BSV2) controlling the protection
functions of the Flash Security Module:
FSV1: 0x14:8000
BSV1: 0x14:8004
FSV2: 0x14:8008
BSV2: 0x14:800C
9.6.2
Security Vector FSV1
The setting of the Flash Security Vector FSV1 is responsible for the read and write protection modes and the individual write protection
of the 8 Kbytes sectors.
9.6.2.1 FSV1 (bit31 to bit16)
The setting of the Flash Security Vector FSV1 bits [31:16] is responsible for the read and write protection modes.
Table 2: Explanation of the bits in the Flash Security Vector FSV1 [31:16]
FSV1[31:19]
FSV1[18]
Write Protection
Level
FSV1[17]
Write Protection
FSV1[16]
Read Protection
Flash Security Mode
set all to “0”
set to “0”
set to “0”
set to “1”
Read Protection (all device modes, except
INTVEC mode MD[2:0]
 “000”)
set all to “0”
set to “0”
set to “1”
set to “0”
Write Protection (all device modes, without
exception)
set all to “0”
set to “0”
set to “1”
set to “1”
Read Protection (all device modes, except
INTVEC mode MD[2:0]
 “000”) and Write Pro-
tection (all device modes)
set all to “0”
set to “1”
set to “0”
set to “1”
Read Protection (all device modes, except
INTVEC mode MD[2:0]
 “000”)
set all to “0”
set to “1”
set to “1”
set to “0”
Write Protection (all device modes, except
INTVEC mode MD[2:0]
 “000”)
set all to “0”
set to “1”
set to “1”
set to “1”
Read Protection (all device modes, except
INTVEC mode MD[2:0]
 “000”) and Write
Protection (all device modes except INTVEC
mode MD[2:0]
 “000”)



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