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Problem to program KL05Z  -  reset_b oscillation

Question asked by R. L on Aug 30, 2013
Latest reply on Feb 9, 2014 by Hui_Ma

Hi All,

     I'm having problems to program a KL05z . The board has only a 3.3v regulator  and a conection to SDA bus. I'm using  Keil + U-Multilink + KL05Z.

    

     I follow the guidelines of other posts (hold the reset_b to gnd during the powerup) but the MCU doesn't go to program mode.

     I read that this situation is normal before the first programming , but I don't know what i'm doing wrong.

 

I send a picture of the reset_b pin :

TEK0000.JPG.jpg

 

does exist a procedure to resolve this issue ?

 

Thanks in advance for your help.

Best Regards

Rodrigo

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