MC9S12C Datasheet, PDF (563/680 Pages) Motorola, Inc – 16-Bit Microcontroller

Chapter 19 64 Kbyte Flash Module (S12FTS64KV4)
19.4.1.3.4 Mass Erase Command
The mass erase operation will erase all addresses in a Flash array using an embedded algorithm.
An example flow to execute the mass erase operation is shown in Figure 19-25. The mass erase command
write sequence is as follows:
1. Write to a Flash array address to start the command write sequence for the mass erase command.
The address and data written will be ignored.
2. Write the mass erase command, 0x41, to the FCMD register.
3. Clear the CBEIF flag in the FSTAT register by writing a 1 to CBEIF to launch the mass erase
command.
If a Flash array to be erased contains any protected area, the PVIOL flag in the FSTAT register will set and
the mass erase command will not launch. Once the mass erase command has successfully launched, the
CCIF flag in the FSTAT register will set after the mass erase operation has completed unless a new
command write sequence has been buffered.
Freescale Semiconductor
MC9S12C-Family / MC9S12GC-Family
563
Rev 01.23