28.10 Example Of Programming 3M-Bit Flash Memory - Fujitsu MB90390 Series Hardware Manual

28.10 Example of Programming 3M-bit Flash Memory

This section presents a programming example of 3M-bit flash memory.
■ Programming Example of 3M-bit Flash Memory
Flash Memory Sample Program
;-------------------------------------------------------------------------------
;3M-bit-Flash test program
;
;1: Transmits the program (address: FF8000H, sector: SA6) from Flash to RAM
; (address: 001500H).
;2: Executes the program on RAM.
;3: Writes the PDR1 value to Flash (address: F90000H, sector: SA1).
;4: Reads the written value (address: F90000H, sector: SA1) and outputs it to PDR2.
;5: Erases the written sector (SA1).
;6: Checks and outputs erase data.
;Conditions
; - Number of bytes transmitted to RAM: 100H (256B)
; - Write/erase termination judgment
; Judgment according to DQ5 (timing limit excess flag)
; Judgment according to DQ6 (toggle bit flag)
; Judgment according to RDY (FMCS)
; - Error handling
; "H" output to P00 to P07
; Reset command issuance
;-------------------------------------------------------------------
;
RESOUS IOSEG
ORG
PDR0 RB
PDR1 RB
PDR2 RB
PDR3 RB
ORG
DDR0 RB
DDR1 RB
DDR2 RB
DDR3 RB
ORG
CKSCR RB
ORG
FMCS RB
ORG
ROMM RB
RESOUS ENDS
;
SSTA SSEG
RW
STA_T RW
SSTA ENDS
;
DATA DSEG
ORG
COMADR2 RW
ORG
COMADR1 RW
DATA ENDS
NAME FLASHWE
TITLE FLASHWE
ABS=00 ;"RESOUS" I/O segment definition
0000H
1
1
1
1
0010H
1
1
1
1
00A1H
1
00AEH
1
006FH
1
0127H
1
ABS=0FFH ;Flash command address
5554H
1
0AAAAH
1
CHAPTER 28 3M-BIT FLASH MEMORY
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