NEC 78K0S/KB1+ User Manual page 314

An example of a program when the command execution time (from write to internal verify) should be minimized in
self programming mode is shown below.
;---------------------------------------------------------------------
;START
;---------------------------------------------------------------------
MOV
MOV
<R> MOV
DI
<R> ModeOnLoop:
MOV
MOV
MOV
MOV
MOV
NOP
<R>
HALT
<R>
BT
<R>
FlashWrite:
MOVW
MOVW
FlashWriteLoop:
MOV
MOV
MOV
MOV
MOV
MOV
MOV
MOV
HALT
MOV
CMP
BNZ
INCW
MOVW
CMPW
BNC
314
CHAPTER 19 FLASH MEMORY
MK0,#11111111B ; Masks all interrupts
MK1,#11111111B
FLCMD,#00H ; Clears FLCMD register
; Configure settings so that the CPU clock ≥ 1 MHz
PFS,#00H ; Clears flash status register
PFCMD,#0A5H ; PFCMD register control
FLPMC,#01H ; FLPMC register control (sets value)
FLPMC,#0FEH ; FLPMC register control (inverts set value)
FLPMC,#01H ; Sets self programming mode with FLPMC register control
; (sets value)
PFS.0,$ModeOnLoop ; Checks completion of write to specific registers
; Repeats the same processing when an error occurs
HL,#DataAdrTop ; Sets address at which data to be written is located
DE,#WriteAdr ; Sets address at which data is to be written
FLCMD,#05H ; Sets flash control command (byte write)
A,D
FLAPH,A ; Sets address at which data is to be written
A,E
FLAPL,A ; Sets address at which data is to be written
A,[HL]
FLW,A ; Sets data to be written
WDTE,#0ACH ; Clears & restarts WDT
; Self programming is started
A,PFS
A,#00H
$StatusError ; Checks write error
; Performs abnormal termination processing when an error
; occurs
HL ; Address at which data to be written is located + 1
AX,HL
AX,#DataAdrBtm ; Performs internal verify processing
$FlashVerify ; if write of all data is completed
User's Manual U17446EJ3V1UD