Information

Flash Operation in Low-Power Modes
28.4.5.1 Wait Mode
When the MCU enters wait mode, the FTFL module is not affected. The FTFL module
can recover the MCU from wait via the command complete interrupt (see Interrupts).
28.4.5.2 Stop Mode
When the MCU requests stop mode, if an FTFL command is active (CCIF = 0) the
command execution completes before the MCU is allowed to enter stop mode.
CAUTION
The MCU should never enter stop mode while any FTFL
command is running (CCIF = 0).
NOTE
While the MCU is in very-low-power modes (VLPR, VLPW,
VLPS), the FTFL module does not accept flash commands.
28.4.6 Functional Modes of Operation
The FTFL module has two operating modes: NVM Normal and NVM Special. The
operating mode affects the command set availability (see Table 28-31). Refer to the Chip
Configuration details of this device for how to activate each mode.
28.4.7 Flash Reads and Ignored Writes
The FTFL module requires only the flash address to execute a flash memory read. MCU
read access is available to all flash blocks.
The MCU must not read from the flash memory while commands are running (as
evidenced by CCIF=0) on that block. Read data cannot be guaranteed from a flash block
while any command is processing within that block. The block arbitration logic detects
any simultaneous access and reports this as a read collision error (see the
FSTAT[RDCOLERR] bit).
28.4.5
Flash Operation in Low-Power Modes
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
634 Freescale Semiconductor, Inc.