Programming tip ⎯ program – Samsung S3C8275X User Manual
Page 293
EMBEDDED FLASH MEMORY INTERFACE
S3F8275X
16-10
PROGRAMMING TIP
⎯ Program
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SB1
LD
FMUSR,#0A5H
; User Program mode enable
LD
FMSECH,#17H
LD
FMSECL,#80H
; Set sector address (1780H
−17FFH)
LD
R2,#17H
; Set a ROM address in the same sector 1780H
−17FFH
LD
R3,#84H
LD
R4,#78H
; Temporary data
CP
UserID_Code,#User_value ; Check user’s ID code (written by user)
; User_value is any value by user
JR
NE,Not_ID_Code
; If not equal, jump to Not_ID_Code
LD
FMCON,#01010001B
; Start program
LDC
@RR2,R4
; Write the data to a address of same sector(1784H)
NOP
; Dummy Instruction, This instruction must be needed
LD
FMUSR,#0
; User Program mode disable
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Not_ID_Code:
SB1
LD
FMUSR,#0
; User Program mode disable
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