Reading; The Program Procedure In User Program Mode - Samsung S3F80P5X User Manual

EMBEDDED FLASH MEMORY INTERFACE

READING

The read operation starts by 'LDC' instruction.

The program 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
LD
LOOP: LDC
INC
CP
JP
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14-16
R2,#03H ; Load flash memory's upper address
; to upper register of pair working register
R3,#00H ; Load flash memory's lower address
; to lower register of pair working register
R0,@RR2 ; Read data from flash memory location
; (Between 300H and 3FFH)
R3
R3,#0FFH
NZ,LOOP
S3F80P5_UM_ REV1.00