24C02读写汇编程序

缓存/存储技术

24C02读写汇编程序
发布日期：2009-3-5 20:28:02　文章来源：搜电　浏览次数： [pic]252
[pic][pic][pic];简洁的24C02读写汇编程序
;--------------------------------------------
I2C_SDA EQU P1.6 ; PIN 5
I2C_SCL EQU P1.7 ; PIN 6

;=============================================
I2C_WRITE: ; WRITE 8 BYTES TO EEROM ; INPUT: A - A*8 = EEROM START ADDR
; R0 - RAN START ADDR
; USE: C, A, R0, R6, R7

ACALL I2C_START
ACALL OUT
MOV R6, #8
WR_LP:MOV A, @R0
ACALL OUT
INC R0
DJNZ R6, WR_LP
AJMP I2C_STOP

;==========================================
I2C_READ: ; READ 8 BYTES FROM EEROM ; INPUT: A - A*8 = EEROM START ADDR

; R0 - R