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Original question:

RF430FRL152H: RF430FRL152H run into non-use memory address when VDD2X has a output current

RF430FRL152H: RF430FRL152H stuck into wrong address

NickSY Huang
Prodigy 240 points
Part Number: RF430FRL152H
Other Parts Discussed in Thread: TPS22919, TLV9001

Hi TI,

I make a circuit, schematic as shown.

The process is (Power by power supply, 1.5V input VDDB, set current limit as 20mA)

1. RF430FRL152H wake up from LPM3 to Active mode, code set EN_V_DOUB and N_VF_REG as 1

2. Code set OP_Power (P1.3) as high and make VDD2X connected to V3P0 by TPS22919

3. VDD2X (V3P0) supply power to TPS7A0512 and TLV9001 for total 62uA

4. Code set reading ADC0 and ADC2

5. After several seconds, code set OP_Power (P1.3) as low, and set EN_V_DOUB and N_VF_REG as 0

The problem is that code stuck into unused address as 0x3FFE, and the last step is  setting (P1.3) as high (enable = 1 = high)

//Set pin 1.3 to output -(Enable/Disable VDD2x)
P1DIR |= 0x09; //0x08
//Toggle Output High/Low
P1OUT = (enable<<3);

It occurs after VDD2X supply power to TPS7A0512 and TLV9001 and before code set reading ADC0 and ADC2.

The probability of the problem is about 4%. And the chance decreases after I remove C16 and C11.

Is there any clues we can find the root cause of this uncertain problem?

If other code is needed to clarify, please let me know.

Thanks.

  • 0
    TI__Genius 13045 points

    Hello Customer, thank you for your question and interest in our products.

    The forum support of this product has been reduced to first reference our existing documentation and collateral. For support, please take a look to the “Similar Topics” section at the lower right of the thread page. In addition, please consult the existing collateral in the “Technical Documentation” section of the RF430FRL152H product web page along with the Frequently Asked Question document. Alternatively, you can use the search engine of your choice to look for related E2E threads. With each of these resources we believe it will help with your question.

  • 0 in reply to Andreas Mueller
    Prodigy 240 points

    Hi Mueller,

    I've read Frequently asked questions for RF430FRL15xH devices, but I can't find clues for my problem.

    Also, I read that RF430FRL15xH Application Circuit and Energy Sources as below picture.

    I think my circuit may work, but there is an uncertain error when I using VDD2X as an output with low current.

    And I can't find the root cause that the phenomenon disappear if I take some capacitors away.

    Please have a look and help, please and thanks a lot.