TEMP_TAB:
DB00H,01H,02H,03H,04H,05H,06H,07H
DB08H,09H,10H,11H,12H,13H,14H,15H
DB16H,17H,18H,19H,20H,21H,22H,23H
DB24H,25H,26H,27H,28H,29H,30H,31H
DB32H,33H,34H,35H,36H,37H,38H,39H
DB40H,41H,42H,43H,44H,45H,46H,47H
DB48H,49H,50H,51H,52H,53H,54H,55H
DB56H,57H,58H,59H,60H,61H,62H,63H
DB64H,65H,66H,67H,68H,69H,70H
;//*****************************************//

下面還介紹一個(gè)ds18b20匯編程序
;**********************************
FLAG1 BIT F0 ;DS18B20存在標(biāo)志位
DQ BIT P1.7
TEMPER_L EQU 29H
TEMPER_H EQU 28H
A_BIT EQU 35H
B_BIT EQU 36H
;************ds18b20匯編程序起始********************
ORG 0000H
AJMP MAIN
ORG 0100H
;**************主程序開(kāi)始************
MAIN:
LCALL INIT_18B20
;LCALL RE_CONFIG
LCALL GET_TEMPER
AJMP CHANGE

;**********DS18B20復(fù)位程序*****************
INIT_18B20: SETB DQ
NOP
CLR DQ
MOV R0,#0FBH
TSR1: DJNZ R0,TSR1 ;延時(shí)
SETB DQ
MOV R0,#25H
TSR2: JNB DQ ,TSR3
DJNZ R0,TSR2
TSR3: SETB FLAG1 ;置標(biāo)志位，表明DS18B20存在
CLR P2.0 ;二極管指示
AJMP TSR5
TSR4: CLR FLAG1
LJMP TSR7
TSR5: MOV R0,#06BH
TSR6: DJNZ R0,TSR6
TSR7:SETB DQ ;表明不存在
RET
;********************設(shè)定DS18B20暫存器設(shè)定值**************
;RE_CONFIG:
;JB FLAG1,RE_CONFIG1
;RET
;RE_CONFIG1: MOV A,#0CCH ;放跳過(guò)ROM命令
;LCALL WRITE_18B20
;MOV A,#4EH
;LCALL WRITE_18B20 ;寫(xiě)暫存器命令
;MOV A,#00H ;報(bào)警上限中寫(xiě)入00H
;LCALL WRITE_18B20
;MOV A,#00H ;報(bào)警下限中寫(xiě)入00H
; LCALL WRITE_18B20