TLC5620 DA转换汇编程序

TLC5620 DA转换汇编程序

           SPI_DATA BIT P1.1
           SPI_CLK  BIT P1.2
           CS_DA    BIT P1.3
           ORG 0000H
           AJMP START
           ORG 0010H
                       
TLC5620:                                ;;D/A 转换主程序       
     CLR   A                           
                   SETB  CS_DA                        
                   MOV    R6,#43H        ;;写D/A命令字(通道数的选择)             
COMMAND:           ADD   A,ACC                       
                   MOV    SPI_DATA,C                      
                   SETB  SPI_CLK                        
                   NOP                               
                   NOP                               
                   NOP                               
                   NOP                               
                   CLR   SPI_CLK                        
                   DJNZ  R6,COMMAND                    
                   MOV    A,R7                        
                   MOV    R6,#08H                     
DATE :             ADD   A,ACC           ;;写D/A数据                  
                   MOV    SPI_DATA,C                      
                   SETB  SPI_CLK                        
                   NOP                               
                   NOP                               
                   NOP                               
                   NOP                               
                   CLR   SPI_CLK                        
                   DJNZ  R6,DATE                   
                   CLR   CS_DA                        
                   NOP                               

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