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FTS64K датащи(PDF) 21 Page - Freescale Semiconductor, Inc

номер детали FTS64K
подробное описание детали  64k bytes of Flash memory
PDF  44 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

FTS64K датащи(HTML) 21 Page - Freescale Semiconductor, Inc

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FTS64K Block User Guide — Version V01.00
21
The FSEC register is loaded from the Flash Protection/Options field byte at $FF0F during the reset
sequence, indicated by “F” in Figure 3-3.
KEYEN — Enable backdoor key to security.
1 = backdoor to Flash is enabled.
0 = backdoor to Flash is disabled.
NV[6:2] — Non Volatile Flag Bits.
These 5 bits are available to the user as non-volatile flags.
SEC[1:0] — Memory Security Bits.
The SEC[1:0] bits define the security state of the device as shown in Table 3-4. If the Flash is
unsecured using the Backdoor Key Access, the SEC bits are forced to 10.
The security function in the Flash module is described in section 4.5.
3.3.3 RESERVED1
This register is reserved and is not accessible to the user.
Register address BASE + $102
Figure 3-4 RESERVED 1
Table 3-4 Security States
SEC[1:0]
Description
00
secured
01
secured
10
unsecured
11
secured
76543210
R
00000000
W
Reset:
00000000
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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