MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 96
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MC9S12E32CFU
Manufacturer Part Number
MC9S12E32CFU
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12E32CFU.pdf
(606 pages)
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Part Number:
MC9S12E32CFUE
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Chapter 2 128 Kbyte Flash Module (FTS128K1V1)
2.3.2.5.1
The general guideline is that protection can only be added, not removed. All valid transitions between
Flash protection scenarios are specified in
FPROT register will be ignored and the FPROT register will remain unchanged. The contents of the
FPROT register reflect the active protection scenario.
96
Scenario
Scenario
0xFFFF
0xFFFF
Flash Protection Restrictions
Protection
Scenario
From
0
1
2
3
4
5
FPHDIS = 1
FPLDIS = 1
7
3
Table 2-12. Flash Protection Scenario Transitions
0
X
Figure 2-9. Flash Protection Scenarios
MC9S12E128 Data Sheet, Rev. 1.07
X
X
1
FPHDIS = 1
FPLDIS = 0
Table
6
2
X
X
X
2
2-12. Any attempt to write an invalid scenario to the
To Protection Scenario
Protected Flash
X
X
X
X
X
X
3
FPHDIS = 0
FPLDIS = 1
5
1
X
X
4
1
X
5
FPHDIS = 0
FPLDIS = 0
6
4
0
Freescale Semiconductor
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