Clear the CCIF to launch the command
Write 0x80 to FSTAT register
Clear the old errors
Access Error and
Protection Violation
Check
FCCOB
ACCERR/
FPVIOL
Set?
EXIT
Write to the FCCOB registers
to load the required command parameter.
More
Parameters?
Availability Check
Results from previous command
Read: FSTAT register
Write 0x30 to FSTAT register
no
yes
no
yes
Previous command complete?
no
CCIF
= ‘1’?
yes
START
Figure 27-25. Generic Flash Command Write Sequence Flowchart
27.4.8.2 Flash Commands
The following table summarizes the function of all flash commands.
FCMD Command Program flash Function
0x01 Read 1s Section × Verify that a given number of
program flash locations from
a starting address are
erased.
0x02 Program Check × Tests previously-programmed
locations at margin read
levels.
0x03 Read Resource IFR, ID Read 4 bytes from program
flash IFR or version ID.
0x06 Program Longword × Program 4 bytes in a program
flash block.
Table continues on the next page...
Functional Description
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
438 Freescale Semiconductor, Inc.
To Next Page
Loading...
