Freescale Semiconductor MK22FN256VDC12, Reference Manual

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any more commands until the flag is cleared (by writing a one
to it).
Address: 4002_0000h base + 0h offset = 4002_0000h
Bit 7 6 5 4 3 2 1 0
Read CCIF RDCOLERR ACCERR FPVIOL 0 MGSTAT0
Write w1c
w1c
w1c w1c
Reset 0 0 0 0 0 0 0 0
FTFA_FSTAT field descriptions
Field Description
7
CCIF
Command Complete Interrupt Flag
Indicates that a flash command has completed. The CCIF flag is cleared by writing a 1 to CCIF to launch a
command, and CCIF stays low until command completion or command violation.
CCIF is reset to 0 but is set to 1 by the memory controller at the end of the reset initialization sequence.
Depending on how quickly the read occurs after reset release, the user may or may not see the 0
hardware reset value.
0 Flash command in progress
1 Flash command has completed
6
RDCOLERR
Flash Read Collision Error Flag
Indicates that the MCU attempted a read from a flash memory resource that was being manipulated by a
flash command (CCIF=0). Any simultaneous access is detected as a collision error by the block arbitration
logic. The read data in this case cannot be guaranteed. The RDCOLERR bit is cleared by writing a 1 to it.
Writing a 0 to RDCOLERR has no effect.
0 No collision error detected
1 Collision error detected
5
ACCERR
Flash Access Error Flag
Indicates an illegal access has occurred to a flash memory resource caused by a violation of the
command write sequence or issuing an illegal flash command. While ACCERR is set, the CCIF flag
cannot be cleared to launch a command. The ACCERR bit is cleared by writing a 1 to it. Writing a 0 to the
ACCERR bit has no effect.
0 No access error detected
1 Access error detected
4
FPVIOL
Flash Protection Violation Flag
Indicates an attempt was made to program or erase an address in a protected area of program flash
memory during a command write sequence . While FPVIOL is set, the CCIF flag cannot be cleared to
launch a command. The FPVIOL bit is cleared by writing a 1 to it. Writing a 0 to the FPVIOL bit has no
effect.
0 No protection violation detected
1 Protection violation detected
3–1
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
0
MGSTAT0
Memory Controller Command Completion Status Flag
Table continues on the next page...
Chapter 29 Flash Memory Module (FTFA)
K22F Sub-Family Reference Manual , Rev. 3, 7/2014
Freescale Semiconductor, Inc. 619