c1232.asm

来自「单片机接口技术(C51版)例程源代码」· 汇编 代码 · 共 18 行

    NAME   ATOC
    PUBLIC  _WRITE
   ?PR?WRITE?AD7705 SEGMENT CODE
   RSEG ?PR?WRITE?AD7705
_WRITE:MOV A,R7    ;;;指令由R7传入
      MOV R1,#08H
LOOP01:CLR P1.4    ;;;SCLK_0
      NOP
      RLC A
      MOV  P1.5,C  ;;;Din
      NOP
      SETB P1.4  ;;;SCLK_1
      NOP
      NOP
      DJNZ R1,LOOP01
      RET