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TMS320F28335: 偶尔出现上电不启动的问题

Part Number: TMS320F28335


28335上电时偶尔出现不启动的问题,设计为1.9V先于3.3V上电,采用MAX823复位芯片驱动XRS,输入时钟为有源晶振,测试时钟正常