1bootloadͨ ϵʱͨŸ³
	ʹõ Ϊ PG0 PG1 

2bootloadѡ񡷣ϵʱͨŸ³

	select Ÿ  bootload ģʽ

	<bootloaderǰԴ> ʹõ Ϊ PG0 PG1 PG2

	<bootloaderǰԴ_2> ʹõ Ϊ PD2 PD2 PE0

3bootloadԶ̱ݡ Զ 
	
	ʹõ Ϊ PG0 PG1 
	ͨbootloaderûͨ   flash λ оƬ ͨ bootload  	  û

4bootloadԶ̲ݡ Զ 
	
	ʹõ Ϊ PG0 PG1 
	ͨbootloaderûͨ bootloadģʽ־  flash λ оƬ ͨ 
        bootload  	  û

 ο 

   
   