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AD7920无法读出转换结果

		            
		

			

									
					    SANJUN
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 8, 2019 
				
			
			
		
    
		
     
				
		
    
		    		    
		    
		    	
			
    电路使用AD7920,硬件如下图,处理器采用AT89S52,软件模拟时钟I信号,读出的数据不正确,且不固定.