NEC 78K0S/KA1+ User Manual page 292

An example of a program that performs a block erase in self programming mode is shown below.
;----------------------------
;START
;----------------------------
FlashBlockErase:
MOV FLCMD,#03H
MOV FLAPH,#07H
MOV FLAPL,#00H
MOV FLAPHC,#07H
MOV FLAPLC,#00H
MOV PFS,#00H
MOV WDTE,#0ACH
HALT
MOV A,PFS
MOV CmdStatus,A
;----------------------------
;END
;----------------------------
292
CHAPTER 18 FLASH MEMORY
; Sets flash control command (block erase)
; Sets number of block to be erased (block 7 is specified here)
; Fixes FLAPL to "00H"
; Sets erase block compare number (same value as that of FLAPH)
; Fixes FLAPLC to "00H"
; Clears flash status register
; Clears & restarts WDT
; Self programming is started
; Execution result is stored in variable
; (CmdStatus = 0: normal termination, other than 0: abnormal
; termination)
User's Manual U16898EJ3V0UD