The CCIF, RDCOLERR, ACCERR, and FPVIOL bits are readable and writable. The
MGSTAT0 bit is read only. The unassigned bits read 0 and are not writable.
NOTE
When set, the Access Error (ACCERR) and Flash Protection
Violation (FPVIOL) bits in this register prevent the launch of
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 ACCERR while
CCIF is set. 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 FPVIOL while CCIF is set. Writing a 0 to
the FPVIOL bit has no effect.
Table continues on the next page...
Chapter 29 Flash Memory Module (FTFA)
K22F Sub-Family Reference Manual, Rev. 4, 08/2016
NXP Semiconductors 637
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