MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 218
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MMC2114
Manufacturer Part Number
MMC2114
Description
M CORE Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MMC2114.pdf
(654 pages)
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Second Generation FLASH for M•CORE (SGFM)
Advance Information
218
SGFMSEC register bits with a reset state denoted by F in
are loaded from the FLASH configuration at address 0x0000_0228
during the reset sequence.
KEYEN — Enable Back Door Key to Security Bit
SECSTAT — FLASH Security Status Bit
SEC[15:0] — Security Field
The security features of the SGFM are described in
Security
The SEC bits define the security state of the device.
the single code that enables security.
Freescale Semiconductor, Inc.
1. The $000B value was chosen because it represents the M•CORE TRAP #3 opcode,
Second Generation FLASH for M•CORE (SGFM)
For More Information On This Product,
making it unlikely that compiled code accidentally programmed at the security word
in the FLASH configuration field location would unintentionally secure the device.
1 = Back door to FLASH is enabled.
0 = Back door to FLASH is disabled.
1 = FLASH security is enabled
0 = FLASH security is disabled
All other combinations
Operation.
SEC[15:0]
$000B
Go to: www.freescale.com
Table 10-4. Security States
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
FLASH unsecured
FLASH secured
Description
10.9 FLASH
(1)
Table 10-4
Figure 10-6
MOTOROLA
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