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ADuC7023 Recommended for New Designs
The ADuC7023 is a fully integrated, 1 MSPS, 12-bit data acquisition system, incorporating high performance multichannel ADCs, 16-bit/32-bit MCUs, and Flash...
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ADuC7023 on Analog.com

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Retention Data ADUC7023



		

			

									
					    Corentin
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Dec 15, 2021 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello,
    

    I am currently working on the ADUC7023 microcontroller and I am using the NI USB-8452 for programming.
    

    I am wondering what could be the consequence of programming the flash memory without erasing all the flash memory before ? Could it be critical the first time the microcontroller is programmed ? Could it be critical to program the flash memory several times without erasing it before ?
    

    Are there probabilities to have bad retention data in the product lifetime because of a bad programming sequence ?
    

    Could data retention be affected by temperature (80-100°C) if programming sequence has not been respected ?
    

    I hope you could answer to my questions.
    

    

    Thanks in advance for your support !
    

    Corentin L.
    

    

    

    

    

    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      
            
			                            
                        
                on Dec 16, 2021 8:07 AM
            
            
					
      
	
      

		
		
      
					
      Hi Corentin,
      

      The data may be corrupted if you don't erase the flash memory page before writing to it, especially if you previously wrote anything to the page. Flash write switches a bit from 1 to 0, while flash erase changes it from 0 to 1.
      

      It is critical when you are planning to use the same flash page multiple times.
      

      The data retention lifetime of the device is mainly affected by the temperature of the device.
      

      Regards,
      

      Karl
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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