MC9S08EL32 Datasheet, PDF (50/356 Pages) Freescale Semiconductor, Inc – 8-Bit HCS08 Central Processor Unit (CPU)

Chapter 4 Memory
The first byte of a series of sequential bytes being programmed in burst mode will take the same amount
of time to program as a byte programmed in standard mode. Subsequent bytes will program in the burst
program time provided that the conditions above are met. If the next sequential address is the beginning
of a new row, the program time for that byte will be the standard time instead of the burst time. This is
because the high voltage to the array must be disabled and then enabled again. If a new burst command
has not been queued before the current command completes, then the charge pump will be disabled and
high voltage removed from the array.
A flowchart to execute the burst program operation is shown in Figure 4-3.
WRITE TO FCDIV⁽¹⁾
(1) _{Required only once}
after reset.
BURST PROGRAM
FLOW
START
0
FACCERR ?
1
CLEAR ERROR
FCBEF ?
0
1
WRITE TO FLASH
TO BUFFER ADDRESS AND DATA
WRITE COMMAND TO FCMD
WRITE 1 TO FCBEF
TO LAUNCH COMMAND
AND CLEAR FCBEF ⁽²⁾
(2) _{Wait at least four bus cycles}
before checking FCBEF or FCCF.
FPVIOL OR
YES
FACCERR ?
YES
NO
NEW BURST COMMAND ?
NO
0
FCCF ?
1
DONE
ERROR EXIT
Figure 4-3. Burst Program Flowchart
MC9S08EL32 Series and MC9S08SL16 Series Data Sheet, Rev. 3
50
Freescale Semiconductor