Samsung S3F80JB manual Programming TIP Reading, Loop LDC, Nz,Loop

S3F80JB 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

	•
	•
	LD	R2,#03H	; Load flash memory’s upper address
			; to upper register of pair working register
	LD	R3,#00H	; Load flash memory’s lower address
			; to lower register of pair working register
LOOP:	LDC	R0,@RR2	; Read data from flash memory location
	INC	R3	; (Between 300H and 3FFH)
	CP	R3,#0FFH
	JP	NZ,LOOP
	•
	•
	•
	•

15-17