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你好,
看芯片表面打印, 左下角有21的字样表示硅版本号是2.1, 具体看下面的勘误表第3页上Figure 1. Device Markings.http://www.ti.com/lit/er/sprz301h/sprz301h.pdf
从2011年底之后出厂的芯片都是PG2.1的了。
