MC9S08SH8CSC View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MC9S08SH8CSC

HCS08 Microcontrollers

Freescale Semiconductor 

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. In the case 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.

WRITE TO FCDIV (Note 1)

Note 1: Required only once after reset.

FLASH BURST

PROGRAM FLOW

START

FACCERR ?

0

1

CLEAR ERROR

FCBEF ?

0

1

WRITE TO FLASH

TO BUFFER ADDRESS AND DATA

WRITE COMMAND (0x25) TO FCMD

WRITE 1 TO FCBEF

TO LAUNCH COMMAND

AND CLEAR FCBEF (Note 2)

Note 2: Wait at least four bus cycles before

checking FCBEF or FCCF.

FPVIO OR

YES

FACCERR ?

NO

YES NEW BURST COMMAND ?

NO

ERROR EXIT

0

FCCF ?

1

DONE

Figure 4-3. FLASH Burst Program Flowchart

MC9S08SH8 MCU Series Data Sheet, Rev. 3

50

Freescale Semiconductor

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