DA14531 Reset

Hi Sir,

We are using the DA14531 MOD in my design. As per the datasheet P0.0 (J12) is the RESET Pin and Logic high on the P0.0 pin make the module Reset.

We are using a transistor circuit to reset the module, The input of the transistor circuit from microcontroller.

"But the module only working ( Program)  when the R304 is removed state" 

We cross checked the base  voltage of transistor is 0.7V and at the time collector voltage is upto 120mV.

We also check with by changing the R304 resistor values low(4.7K) and high(20K).

Could you please suggest what will be issue? what modifications we needs to make

  

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  • Hi CHIN,

    Thank you for posting your question online.
    When you have removed the R304 everything works as expected? 
    On the DA14531MOD, the P0_0 is the HW reset but it is also being used by the integrated SPI Flash. For this reason you can not have the P0_0 directly connected to GND. 
    A simple Button/Switch implementation should be enough to handle the HW Reset.

    Best Regards,
    OV_Renesas

Reply
  • Hi CHIN,

    Thank you for posting your question online.
    When you have removed the R304 everything works as expected? 
    On the DA14531MOD, the P0_0 is the HW reset but it is also being used by the integrated SPI Flash. For this reason you can not have the P0_0 directly connected to GND. 
    A simple Button/Switch implementation should be enough to handle the HW Reset.

    Best Regards,
    OV_Renesas

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