|
MC9S12HZ256_08 Datasheet, PDF (71/692 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
|
◁ |
Scenario
FPHDIS = 1
FPLDIS = 1
7
FPHDIS = 1
FPLDIS = 0
6
Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
FPHDIS = 0
FPLDIS = 1
5
FPHDIS = 0
FPLDIS = 0
4
PPAGE
0x0030â0x0035
0x0038â0x003D
PPAGE
0x0036â0x0037
0x003Eâ0x003F
Scenario
3
2
1
0
PPAGE
0x0030â0x0035
0x0038â0x003D
PPAGE
0x0036â0x0037
0x003Eâ0x003F
Unprotected region
Protected region
not defined by FPLS, FPHS
Protected region with size
defined by FPLS
Protected region with size
defined by FPHS
Figure 2-9. Flash Protection Scenarios
2.3.2.6 Flash Protection Restrictions
The general guideline is that Flash protection can only be added and not removed. Table 2-15 speciï¬es all
valid transitions between Flash protection scenarios. Any attempt to write an invalid scenario to the
FPROT register will be ignored and the FPROT register will remain unchanged. The contents of the
MC9S12HZ256 Data Sheet, Rev. 2.05
Freescale Semiconductor
71
|
▷ |