Fujitsu MB90390 Series Hardware Manual page 617

;////////////////////////////////////////////////
;Write (SA1)
;////////////////////////////////////////////////
MOV A,PDR1
MOVW @RW0+00,A
MOV FMCS,#20H
MOVW ADB:COMADR1,#00AAH
MOVW ADB:COMADR2,#0055H
MOVW ADB:COMADR1,#00A0H
;
MOVW A,@RW0+00
MOVW @RW2+00,A
WRITE ;Wait time check
; ///////////////////////////////////////////////////////////////////
; ERROR when the time limit excess check flag is set and toggle operation is
; in progress
; ///////////////////////////////////////////////////////////////////
MOVW A,@RW2+00
AND A,#20H
BZ NTOW
MOVW A,@RW2+00
MOVW A,@RW2+00
XORW A
AND A,#40H
BNZ ERROR
; ///////////////////////////////////////
; Write termination check (FMCS-RDY)
; ///////////////////////////////////////
; ///////////////////////////////////////
NTOW MOVW A,FMCS
AND A,#10H
BZ WRITE
MOV FMCS,#00H
; /////////////////////////////////////////////////////
; Write data output
; /////////////////////////////////////////////////////
MOVW RW2,#0000H
MOVW A,@RW2+00
MOV PDR2,A
;
WAIT2 BBC PDR3:1,WAIT2
;
;/////////////////////////////////////////////
;Sector erase (SA1)
;/////////////////////////////////////////////
MOV @RW2+00,#0000H
MOV FMCS,#20H
MOVW ADB:COMADR1,#00AAH
MOVW ADB:COMADR2,#0055H
MOVW ADB:COMADR1,#0080H
MOVW ADB:COMADR1,#00AAH
MOVW ADB:COMADR2,#0055H
MOV @RW2+00,#0030H
ELS ;Wait time check
; ///////////////////////////////////////////////////////////////////
; ERROR when the time limit excess check flag is set and toggle operation is
; in progress
; ///////////////////////////////////////////////////////////////////
MOVW A,@RW2+00
AND A,#20H
BZ NTOE
MOVW A,@RW2+00
MOVW A,@RW2+00
XORW A
;
AND A,#40H
BNZ ERROR
CHAPTER 28 3M-BIT FLASH MEMORY
;PDR1 data allocation to RAM
;Write mode setting
;Flash write command 1
;Flash write command 2
;Flash write command 3
;Input data (RW0) write to flash memory (RW2)
;DQ5 time limit check
;Time limit over
;AH
;AL
;XOR of AH and AL (1 when the values differ)
;Is the DQ6 toggle bit different?
;To ERROR when the DQ6 toggle bit is different
;Extraction of FMCS RDY bit (bit 4)
;End of write?
;Write mode release
;Write data output
;PDR3: 1(sector erase start at "H" level)
;Address initialization
;Erase mode setting
;Flash erase command 1
;Flash erase command 2
;Flash erase command 3
;Flash erase command 4
;Flash erase command 5
;Issuance of erase command 6 to the sector
to be erased
;DQ5 time limit check
;Time limit over
;AH High and Low are alternately output from
;AL DQ6 per read during write operation.
;XOR of AH and AL (If the DQ6 value differs,
write operation is in progress (1)).
;Is the DQ6 toggle bit High?
;ERROR when the DQ6 toggle bit is "H"
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