mc9s12c32mpb16 Freescale Semiconductor, Inc, mc9s12c32mpb16 Datasheet - Page 478

• Manufacturer Part Number: mc9s12c32mpb16
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 17 16 Kbyte Flash Module (S12FTS16KV1)
Figure 17-9
Flash array after reset, it is allowed to change in normal modes. This protection scheme can be used by
applications requiring re-programming in single chip mode while providing as much protection as possible
if no re-programming is required.
17.3.2.5.1
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.
478
illustrates all possible protection scenarios. Although the protection scheme is loaded from the
Flash Protection Restrictions
Scenario
Scenario
Table 17-11. Flash Protection Scenario Transitions
Protection
0xFFFF
0xFFFF
Scenario
Figure 17-9. Flash Protection Scenarios
From
0
1
2
MC9S12C-Family / MC9S12GC-Family
FPHDIS = 1
Table
3
1
X
0
Rev 01.23
17-11. Any attempt to write an invalid scenario to the
To Protection Scenario
Protected Flash
X
X
X
1
FPHDIS = 0
X
2
2
0
(1)
3
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