mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 122

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

ColdFire Flash Module (CFM)
6.3.4.3
The CFMSEC controls the Flash security features.
6-10
Address
Reset
Reset
Field KEYEN SECSTAT
Field
R/W
R/W
Bits
31
30
Note: The SECSTAT bit reset value is determined by the security state of the Flash. All other bits in the register
are loaded at reset from the Flash Security longword stored at the array base address + 0x0000_0414.
CFM Security Register (CFMSEC)
31
15
CFMCLKD must be written with an appropriate value before programming
or erasing the Flash array. Refer to
Register.”
Enabling Flash security will disable BDM communications.
When Flash security is enabled, the chip will boot in single-chip mode
regardless of the external reset configuration.
SECSTAT
KEYEN
30
Name
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
29
Figure 6-6. CFM Security Register (CFMSEC)
Enable back door key to security
1 Back door to Flash is enabled.
0 Back door to Flash is disabled.
Flash security status
1 Flash security is enabled
0 Flash security is disabled
Table 6-6. CFMSEC Field Descriptions
IPSBAR + 0x1D_0008
NOTE
NOTE
NOTE
Section 6.4.3.1, “Setting the CFMCLKD
See Note
See Note
SEC
R
R
Description
—
Freescale Semiconductor
16
0