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TMS320F280049C: 独立模式下无法从FLASH中引导启动,连上仿真器又可以

Part Number: TMS320F280049C

仿真器模式下能正常从FLASH引导启动,直接上电无法正常从FLASH中引导启动,24,32管脚检查过了上电都是高电平,code_start也添加了,在仿真器模式下设置地址0x0000D00值为0xA5FFFFFF,选择标准引导模式,可以引导成功,但是独立模式下就无法启动。