Information

FTFL_FSTAT field descriptions (continued)
Field Description
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 or data flash memory during a command write sequence or a write was attempted to a
protected area of the FlexRAM while enabled for EEPROM . 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.
28.34.2 Flash Configuration Register (FTFL_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. PFLSH,
RAMRDY, and EEERDYare read-only status bits . The unassigned bits read as noted and
are not writable. The reset values for the PFLASH, RAMRDY, and EEERDY bits are
determined during the reset sequence.
Address: 4002_0000h base + 1h offset = 4002_0001h
Bit 7 6 5 4 3 2 1 0
Read
CCIE RDCOLLIE
ERSAREQ
ERSSUSP
0 PFLSH RAMRDY EEERDY
Write
Reset
0 0 0 0 0 0 0 0
Chapter 28 Flash Memory Module (FTFL)
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
Freescale Semiconductor, Inc.
Preliminary
593
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