Reading - Samsung S3F84B8 User Manual

S3F84B8_UM_REV 1.00

19.1.8 READING

The read operation starts using the 'LDC' instruction.
Program Procedure in User Program Mode
1. Load flash memory upper address into upper register of pair working register.
2. Load flash memory lower address into lower register of pair working register.
3. Load data from flash memory using 'LDC' instruction by indirectly addressing mode.


LD
LD
LOOP: LDC
INC
CP
JP




Example 19-3
R2,#03H
R3,#00H
R0,@RR2
R3
R3,#0FFH
NZ,LOOP
19 EMBEDDED FLASH MEMORY INTERFACE
Reading
; Loads flash memory's upper address
; to upper register of pair working register
; Loads flash memory's lower address
; to lower register of pair working register
; Reads data from flash memory location
; (Between 300H and 3FFH)
19-14