UPD78F9234MC-5A4-A Datasheet, PDF (300/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 19 FLASH MEMORY
An example of a program that shifts the mode to normal mode is shown below.
;----------------------------
;START
;----------------------------
MOV
ModeOffLoop:
MOV
MOV
MOV
MOV
MOV
FLCMD,#00H
PFS,#00H
PFCMD,#0A5H
FLPMC,#00H
FLPMC,#0FFH
FLPMC,#00H
; Clear FLCMD register
; Clears flash status register
; PFCMD register control
; FLPMC register control (sets value)
; FLPMC register control (inverts set value)
; Sets normal mode via FLPMC register control (sets value)
BT
PFS.0,$ModeOffLoop ; Checks completion of write to specific registers
; Repeats the same processing when an error occurs
; Restore the CPU clock to its setting before the self
; programming, after normal completion of the specific
; sequence
MOV
MK0,#INT_MK0
; Restores interrupt mask flag
MOV
MK1,#INT_MK1
EI
;----------------------------
;END
;----------------------------
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User’s Manual U17446EJ5V0UD