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请教430F2131器件的BSL出现的“同步错误”问题



我用430F2131单片机进行BSL编程的时候,使用MSPFET软件进行器件的Erase“擦除”和Blank check“空检查”功能时,软
件总是提示:

21:57:44 Initialize...
21:57:45 Device: MSP430F21x1. Info(0x1000-0x10FF), Main:(0xE000-0xFFFF)
21:57:45 Erasing flash memory...
21:57:46 Erase failed. Synchronization error.
22:04:47 Initialize...
22:04:48 Device: MSP430F21x1. Info(0x1000-0x10FF), Main:(0xE000-0xFFFF)
22:04:48 Blank check device memory...
22:04:51 Blank check failed. Synchronization error.
22:57:34 Device: MSP430F21x1. Info(0x1000-0x10FF), Main:(0xE000-0xFFFF)
22:57:34 Reading device memory..
22:57:36 Read failed. Synchronization error.

都是说的什么同步错误,

我的BSL硬件连接关系:

f2131单片机        BSL

      P1.1               TXD

     P2.2               RXD

    TEST              RTS

     RST               DTR

    GND              GND

由于芯片是买的二手芯片,估计熔丝是被熔断了的,没法直接使用JTAG,只能先BSL处理一下,

还请各位高手多多指教啊!