外部的WDT连接到PIC32 MX150 F128B但不能编程UC

嗨，试试电阻，值在470到1kHMIN之间（WDT/RST信号引脚）和（上拉电阻，/MCLR引脚）。参见：MCP1316的数据表：图5-4：具有ICSP特性的PIC®微控制器的典型应用电路。迈西尔



      以下为原文

    Hi,
Try with Resistor, value between 470 to 1kOhm
between (WDT /RST signal pin) and (Pullup resistor , /MCLR pin).
See: Datasheet for MCP1316: 
FIGURE 5-4: Typical Application Circuit for PIC® Microcontroller with the ICSP™ Feature.
 
   Mysil

谢谢！我刚刚看到了。我看了4-19！



      以下为原文

    Thanks! I just saw it. I`ve watched 4-19!

嗨，又来了！还有一个问题。我注意到WDT引脚必须被驱动低，所以MPC1316可以开始工作。所以，如果我从来没有驱动WDT引脚低，根本不是开始！我怎么解决这个问题？我想确定WDT每次都在工作。我能把WDT连接到下拉电阻吗？所以，如果控制器不启动（我的主要担心），WDT重置它？我假设PIC引脚在电源上处于高阻抗状态！谢谢！



      以下为原文

    Hi, again! One more question. I`ve noticed the WDT pin has to be driven low so MPC1316 could start working. So if I never drive WDT pin low is doesn`t start at all! How can I fix this? I want to be sure WDT is working every time. 
Can I connected WDT to pull-down resistor? So if the controller doesn`t start(which my major worry), the WDT to reset it?! I assume the PIC pins are in high impedance state on power on!
Thanks!

嗨，又来了！还有一个问题。我注意到WDT引脚必须被驱动低，所以MPC1316可以开始工作。所以，如果我从来没有驱动WDT引脚低，根本不是开始！我怎么解决这个问题？我想确定WDT每次都在工作。我能把WDT连接到下拉电阻吗？所以，如果控制器不启动（我的主要担心），WDT重置它？我假设PIC引脚在电源上处于高阻抗状态！谢谢！



      以下为原文

    Hi, again! One more question. I`ve noticed the WDT pin has to be driven low so MPC1316 could start working. So if I never drive WDT pin low is doesn`t start at all! How can I fix this? I want to be sure WDT is working every time. 
Can I connected WDT to pull-down resistor? So if the controller doesn`t start(which my major worry), the WDT to reset it?! I assume the PIC pins are in high impedance state on power on!
Thanks!