MB91F464HB Datasheet, PDF (40/112 Pages) Fujitsu Component Limited. – 32-bit Microcontroller

MB91460H Series
5. Poweron 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
6. Flash Security
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
FSV2: 0x14:8008
BSV1: 0x14:8004
BSV2: 0x14:800C
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.
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.
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, ex-
cept INTVEC mode MD[2:0]=”000”)
set all to ‘0’
set to ‘0’
set to ‘1’
set to ‘0’
Write Protection (all device modes, with-
out exception)
set all to ‘0’
set to ‘0’
set to ‘1’
set to ‘1’
Read Protection (all device modes, ex-
cept INTVEC mode MD[2:0]=”000”) and
Write Protection (all device modes)
set all to ‘0’
set to ‘1’
set to ‘0’
set to ‘1’
Read Protection (all device modes, ex-
cept INTVEC mode MD[2:0]=”000”)
set all to ‘0’
set to ‘1’
set to ‘1’
set to ‘0’
Write Protection (all device modes, ex-
cept INTVEC mode MD[2:0]=”000”)
set all to ‘0’
set to ‘1’
set to ‘1’
set to ‘1’
Read Protection (all device modes, ex-
cept INTVEC mode MD[2:0]=”000”) and
Write Protection (all device modes except
INTVEC mode MD[2:0]=”000”)
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DS07-16616-1E