upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 263

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

An example of a program when the interrupt-disabled time (from write to internal verify) should be minimized in self
programming mode is shown below.
;---------------------------------------------------------------------
;START
;---------------------------------------------------------------------
FlashWrite:
FlashWriteLoop:
; Sets write command
MOVW
MOVW
MOV
MOV
MOV
MOV
MOV
MOV
MOV
CALL
; Execution of write command
MOV
MOV
HALT
MOV
CMP
BNZ
CALL
MOV
EI
; Judgment of writing all data
INCW
MOVW
CMPW
BNC
INCW
BR
; Setting internal verify command
HL,#DataAdrTop ; Sets address at which data to be written is located
DE,#WriteAdr
FLCMD,#05H
A,D
FLAPH,A
A,E
FLAPL,A
A,[HL]
FLW,A
!ModeOn
PFS,#00H
WDTE,#0ACH
A,PFS
A,#00H
$StatusError
!ModeOff
MK0,#INT_MK0
HL
AX,HL
AX,#DataAdrBtm ; Performs internal verify processing
$FlashVerify
DE
FlashWriteLoop
; Sets address at which data is to be written
; Sets flash control command (byte write)
; Sets address at which data is to be written
; Sets address at which data is to be written
; Sets data to be written
; Shift to self programming mode
; Clears flash status register
; Clears & restarts WDT
; Self programming is started
; Checks write error
; Performs abnormal termination processing when an error
; occurs.
; Shift to normal mode
; Restores interrupt mask flag
; Address at which data to be written is located + 1
; if write of all data is completed
; Address at which data is to be written + 1
CHAPTER 16 FLASH MEMORY
User’s Manual U16994EJ3V0UD
263