NXP Semiconductors KL25 Series - Freescale Semiconductor, Inc

FTFA_FSTAT field descriptions (continued)
Field Description
0 Flash command in progress
1 Flash command has completed
6
RDCOLERR
Flash Read Collision Error Flag
The RDCOLERR error bit 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
The ACCERR error bit 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
The FPVIOL error bit 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
The MGSTAT0 status flag is set if an error is detected during execution of a flash command or during the
flash reset sequence. As a status flag, this bit cannot (and need not) be cleared by the user like the other
error flags in this register.
The value of the MGSTAT0 bit for "command-N" is valid only at the end of the "command-N" execution
when CCIF=1 and before the next command has been launched. At some point during the execution of
"command-N+1," the previous result is discarded and any previous error is cleared.
27.33.2 Flash Configuration Register (FTFA_FCNFG)
This register provides information on the current functional state of the flash memory
module.
The erase control bits (ERSAREQ and ERSSUSP) have write restrictions. The
unassigned bits read as noted and are not writable.
Memory Map and Registers
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
426 Freescale Semiconductor, Inc.