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TMS320F28069: XRS引脚要持续多长时间的低电位,电压低于到多少DSP才会重启

Part Number: TMS320F28069


客户现在有款逆变器,主控芯片是tms320f28069,遇到DSP自动重启的问题,客户拆除了DSP  的复位脚(XRS引脚)处的电压监控芯片,直接通过一个4.7k的电阻把XRS引脚上拉到3.3V,如附图所示。但是DSP还是会重启。想咨询下,XRS引脚要持续多长时间的低电位,电压低于到多少DSP才会重启