汇编AT24C02一个字节程序段

1、.最新资料整理推荐;定义引脚SDA BIT P3. 3SCL BIT P3. 2ORG 0000HMAIN:MOV 30H, #25H;存想存的数字MOV 31H,#34HMOV Rl, 30HLL:MOV B, R1CALL W24C02;写入 24c02CALL R24C02;读出 24c02CALL DISPLAY ;显示数字INC R1JMP LL*DISPLAY:MOV A, 32HANL A, #OFOHSWAP AMOVC A, A+DPTRMOV PO, A;显示延时CLR Pl. 0CALL DELAYSETB PL 0ANL 32H, #OFHMOV A, 32HMOV D

2、PTR, #TAB1MOVC A, A+DPTRMOV PO, ACLR Pl. 1CALL DELAY ;显示延时RETDBTAB1:OCOH, 0F9H, 0A4H, OBOH, 099H, 092H, 082H, 0F8H, 080H, 090HRETDELAY:MOV R7, #14H;延迟子程序DLY:MOV R6, #0F8HDLY1:DJNZ R6 , DLY1DJNZ R7 , DLYRET写入AT24C02的程序段W24C02: CALL STARTMOV A, #OAOHCALL WBYTECALL ACK mov a, noCALL WBYTECALL ACKMOV A,

3、 BCALL WBYTECALL ACKCALL STOPCALL S005RETS005: MOV R7, #10;延时程序段S0051: MOV R6, #248DJNZ R6, $DJNZ R7, S0051RETMOV A, #0A0H5R24C02: CALL START;读AT24cO2程序段CALL WBYTECALL ACKMOV A, #0CALL WBYTECALL ACKCALL STARTMOV A, #OA1HCALL WBYTECALL ACKCALL RBYTECALL NACKCALL STOPRETWBYTE:MOV R7, #8;写程序段WLOOP:RLC

4、AJC WL00P2CLR SDASETB SCLNOPNOP最新资料整理推荐NOPNOPCLR SCLDJNZ R7, WLOOPRETWL00P2: SETB SDASETB SCLNOPNOPNOPNOPCLR SCLCLR SDADJNZ R7, WLOOPRET9 *RBYTE: MOV R7, #8;读 02 程序段RLOOP: SETB SDASETB SCLMOV A, 32HMOV C, SDA7最新资料整理推荐RLC AMOV 32H, ACLR SCLDJNZ R7, RLOOPRETSTART:SETB SDA;复位程序段SETB SCLNOPNOPNOPNOPCLR SDANOPNOPNOPCLR SCLNOPRETSTOP:CLR SDASETB SCLNOPNOPNOPNOPSETB SDANOPNOPNOPNO