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				                on May 30, 2025 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  DS1302  
    
    		        		    		    
    
		    		    
		    			
    
			    
    DS1302，X1和X2外接32.768KHz的晶振，但是用示波器测量晶振，晶振一直是高电平在3v左右，没有波形，晶振两端串联22PF的电容接地，用示波器测不到晶振的波形。芯片供电5v，备用电源是3.3v
    
			
    
			
									
		                             
                        

    
    
                                            
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