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我们这次购买的芯片上没有ARM标记,右上角的版本号改成了二维码的形式。 请咨询我们的供应商,不同的产地/包装厂/批次会有所不同。但是我们的质量部门不会库存它们。 标记的变化比较大。此标记更改是否有相应的文件? Translation: There is no ARM mark on the chip we purchased this time, and the version number in the upper right corner has been changed to a QR ...
STM32F407ZGT6STM32F407ZGT6JWhat does the J suffix stand for?No explanation was found in the datasheet
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