mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 585

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

25.3.1.8 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 bits 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 bit is set or if the WEN bit is not set in the EzPort status register.
25.3.1.9 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 then EzPort is enabled;
otherwise, it is disabled. This command allows the chip to boot up from flash memory
after it has been programmed by an external source.
This command is not accepted if the WIP bit is set in the EzPort status register.
25.3.1.10 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.
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 bit is set or if the WEN bit is not set in
the EzPort status register.
Freescale Semiconductor, Inc.
The flash is configured in NVM special mode, restricting which
commands can be executed by the flash when security is
enabled.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
NOTE
Chapter 25 EzPort
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