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    出来炸到,请教个问题 谢谢

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    • M
      max_chow last edited by

      F1C200S ddr REF 处分压作用是干什么的?目前为止 我的板子有了固件 但是跑不起来,分压电阻用的2K ;DRAM=2.5V 谢谢各位大佬,比较急

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      • M
        mangogeek last edited by

        ddr都有个VREF参考,电压就是1/2的VCC_DRAM。
        可参考已量产的R3对比下原理图,重点检查电源、晶振、复位等地方。
        https://mangopi.org/tiny200

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