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关于28069的PCB封装问题



您好:

      我选择了TMS320F28069PZP这个型号,封装HTQFP (100),我从官网下载了CAD.bxl文件,通过 Ultra Librarian software软件倒出

PADS的封装,但是发现倒出后有三种封装(1)PZP0100G_N  (2)PZP0100G_M (3)PZP0100G_L  请问这三种封装有什么区别,我应该

选择那种?