Freescale Semiconductor ColdFire MCF52210 - Manual (Page 317)

ColdFire Flash Module (CFM)
MCF52211 ColdFire® Integrated Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 18-27
An example flow to execute the mass erase command is shown in Figure 18-18 . The mass erase command
write sequence is as follows:
1. Write to any flash memory address to start the command write sequence for the mass erase
command. The specific address and data written during the mass erase command write sequence
is ignored.
2. Write the mass erase command, $41, to the CFMCMD register.
3. Clear the CBEIF flag by writing a 1 to CBEIF to launch the mass erase command.
If any flash logical sector is protected, the PVIOL flag in the CFMUSTAT register sets during the
command write sequence and the mass erase command does not launch. After the mass erase command
has successfully launched, the CCIF flag in the CFMUSTAT register sets after the mass erase operation
has completed, unless a new command write sequence has been buffered.