upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 258

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

258
An example of a program when the interrupt-disabled time (from erasure to blank check) should be minimized in
self programming mode is shown below.
;---------------------------------------------------------------------
;START
;---------------------------------------------------------------------
FlashBlockErase:
; Sets erase command
MOV
MOV
MOV
MOV
MOV
CALL
; Execution of erase command
MOV
MOV
HALT
MOV
CMP
BNZ
CALL
; Sets blank check command
MOV
MOV
MOV
MOV
MOV
CALL
; Execution of blank check command
MOV
MOV
HALT
MOV
CMP
BNZ
FLCMD,#03H
FLAPH,#07H
FLAPL,#00H
FLAPHC,#07H
FLAPLC,#00H
!ModeOn
PFS,#00H
WDTE,#0ACH
A,PFS
A,#00H
$StatusError
!ModeOff
FLCMD,#04H
FLAPH,#07H
FLAPL,#00H
FLAPHC,#07H
FLAPLC,#0FFH
!ModeOn
PFS,#00H
WDTE,#0ACH
A,PFS
A,#00H
$StatusError
; 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”
; Shift to self programming mode
; Clears flash status register
; Clears & restarts WDT
; Self programming is started
; Checks erase error
; Performs abnormal termination processing when an error
; occurs.
; Shift to normal mode
; Sets flash control command (block blank check)
; Sets block number for blank check (block 7 is specified here)
; Fixes FLAPL to “00H”
; Sets blank check block compare number (same value as that of
; FLAPH)
; Fixes FLAPLC to “FFH”
; Shift to self programming mode
; Clears flash status register
; Clears & restarts WDT
; Self programming is started
; Checks blank check error
; Performs abnormal termination processing when an error occurs
CHAPTER 16 FLASH MEMORY
User’s Manual U16994EJ3V0UD