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S3F8275X EMBEDDED FLASH MEMORY INTERFACE
16-11
READING
The read operation of programming starts by 'LDC' instruction.
The Reading Procedure in User Program Mode
1. Load a flash memory upper address into upper register of pair working register.
2. Load a flash memory lower address into lower register of pair working register.
3. Load receive data from flash memory location area on 'LDC' instruction by indirectly addressing mode.
PROGRAMMING TIP ⎯ Reading
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LD R2,#3H ; Load flash memory upper address
; To upper of pair working register
LD R3,#0 ; Load flash memory lower address
; To lower pair working register
LOOP: LDC R0,@RR2 ; Read data from flash memory location
; (Between 300H and 3FFH)
INC R3
CP R3,#0H
JP NZ,LOOP
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