Datasheet

Chapter 2 128 Kbyte Flash Module (FTS128K1V1)
MC9S12E128 Data Sheet, Rev. 1.07
106 Freescale Semiconductor
2.4.1.3 Valid Flash Commands
Table 2-16 summarizes the valid Flash commands along with the effects of the commands on the Flash
array.
CAUTION
A Flash word must be in the erased state before being programmed.
Cumulative programming of bits within a Flash word is not allowed.
Table 2-16. Valid Flash Commands
FCMD Meaning Function on Flash Array
0x05 Erase
Verify
Verify all bytes in the Flash array are erased.
If the Flash array is erased, the BLANK bit will set in the FSTAT register upon command completion.
0x20 Program Program a word (2 bytes) in the Flash array.
0x40 Sector
Erase
Erase all 1024 bytes in a sector of the Flash array.
0x41 Mass
Erase
Erase all bytes in the Flash array.
A mass erase of the full Flash array is only possible when FPLDIS, FPHDIS, and FPOPEN bits in
the FPROT register are set prior to launching the command.