Information

29.3.1.8 Bulk Erase
The Bulk Erase (BE) command erases the entire contents of flash memory, ignoring any
protected sectors or flash security. Flash security is disabled upon successful completion
of the BE command.
Attempts to issue a BE command while the BEDIS and FS fields are set results in the
WEF flag being set in the EzPort status register. Also, this command is not accepted if
the WEF or WIP field is set or if the WEN field is not set in the EzPort status register.
29.3.1.9 EzPort Reset Chip
The Reset Chip (RESET) command forces the chip into the reset state. If the EzPort chip
select (EZP_CS) pin is asserted at the end of the reset period, EzPort is enabled;
otherwise, it is disabled. This command allows the chip to boot up from flash memory
after being programmed by an external source.
This command is not accepted if the WIP field is set in the EzPort status register.
29.3.1.10 Write FCCOB Registers
The Write FCCOB Registers (WRFCCOB) command allows the user to write to the flash
common command object registers and execute any command allowed by the flash.
NOTE
When security is enabled, the flash is configured in NVM
Special mode, restricting the commands that can be executed by
the flash.
After receiving 12 bytes of data, EzPort writes the data to the FCCOB 0-B registers in the
flash and then automatically launches the command within the flash. If greater or less
than 12 bytes of data is received, this command has unexpected results and may result in
the WEF flag being set.
This command is not accepted if the WEF or WIP field is set or if the WEN field is not
set in the EzPort status register.
Chapter 29 EzPort
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 567