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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