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看门狗上电复位



我使用的TMS320LF2406APZA,供电电源为3.3V,dsp复位引脚(/RS)接10K上拉电阻,.01u对地电容,有源晶振10M,配置cpu时钟40M,锁相环两电容分别为0.68u、0.015u,电阻11欧,现在只供3.3V电源,只要上电就会出现看门狗复位现象。看门狗复位时间为13.1ms,主程序为5ms。把复位电路电容改为103,102现象还是一样。

dsp最小系统.sch