Ng algorithm is shown in, Figure 6-13 – Motorola ColdFire MCF5281 User Manual
Page 132
ColdFire Flash Module (CFM)
6-20
Freescale Semiconductor
Figure 6-13. Example Program Algorithm
WRITE CFMCLKD
READ CFMCLKD
DIVLD SET?
WRITE PROGRAM DATA
WRITE PROGRAM COMMAND 0x20
TO CFMCMD
WRITE 0x80 TO CLEAR CFMUSTAT
YES
NO
CBEIF BIT
YES
CLOCK REGISTER
WRITTEN CHECK
1.
2.
3.
CFMUSTAT ACCERR BIT
WRITE 0x10 TO CLEAR
NO
YES
NO
PROTECTION
VIOLATION CHECK
ACCESS
ERROR CHECK
READ CFMUSTAT
NO
NO
ADDRESS, DATA,
COMMAND BUFFER
EMPTY CHECK
NEXT WRITE?
YES
NO
TO ARRAY ADDRESS
CFMUSTAT PVIOL BIT
WRITE 0x20 TO CLEAR
YES
BIT POLLING
FOR COMMAND
COMPLETION CHECK
READ CFMUSTAT
YES
NOTE: COMMAND SEQUENCE
ABORTED BY WRITING 0x00
TO CFMUSTAT
NOTE: COMMAND SEQUENCE
ABORTED BY WRITING 0x00
TO CFMUSTAT
EXIT
READ CFMUSTAT
NO
START
YES
CBEIF
SET?
PVIOL
SET?
ACCERR
SET?
CBEIF
SET?
CCIF
SET?
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3