MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 214

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Second Generation FLASH for M•CORE (SGFM)
Advance Information
214
NOTE:
In emulation mode, writes to the SGFM array will generate an SGFM
access error and set the ACCERR bit (see
Illegal
LOCK — Write Lock Control Bit
CBEIE — Command Buffer Empty Interrupt Enable Bit
CCIE — Command Complete Interrupt Enable Bit
KEYACC — Enable Security Key Writing Bit
SGFM array. Instead, external memory that emulates the FLASH
must drive the data bus, and the EBI emulation chip select
mechanism terminates the bus cycle instead of the SGFM.
The LOCK bit is always readable but can only be set once in user
mode. In debug or test mode, the LOCK bit is always writable.
The CBEIE bit is readable and writable in all modes. CBEIE enables
an interrupt request when the command buffer for the FLASH
physical blocks selected by BKSEL[1:0] is empty.
The CCIE bit is readable and writable in all modes. CCIE enables an
interrupt when the command executing for the FLASH physical blocks
selected by BKSEL[1:0] is complete.
The KEYACC bit is readable in all modes and only writable if the
KEYEN bit in the SGFMSEC register is set.
Freescale Semiconductor, Inc.
Second Generation FLASH for M•CORE (SGFM)
For More Information On This Product,
1 = Emulation mode
0 = User mode
1 = The EME bit, SGFMPROT, SGFMSACC, and SGFMDACC
0 = The EME bit, SGFMPROT, SGFMSACC, and SGFMDACC
1 = Request an interrupt whenever the CBEIF flag is set.
0 = Command buffer empty interrupts disabled
1 = Request an interrupt whenever the CCIF flag is set.
0 = Command complete interrupts disabled
1 = Writes to the FLASH array are interpreted as keys to open the
0 = Writes to the FLASH array are interpreted as the start of a
Operations).
registers are write-locked
registers are writable
back door.
program, erase, or verify sequence.
Go to: www.freescale.com
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
10.8.3.4 FLASH User Mode
MOTOROLA