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MSP-EXP430FR5969: Modify EXP430FR5969 to 3 V

Part Number: MSP-EXP430FR5969
Other Parts Discussed in Thread: MSP-FET

Hello,

I have the evaluation board TI MSP-EXPFR5969 with energy trace technology. It has an output voltage of about 3.55 V. I would like to modify this to exactly 3 V. My questions era now

a) will the energy trace still work correctly if the voltage is changed? Will it adapt the calculations to the lower voltage? Or does some firmware have to be changed?

b) can I simply replace the IC101 (TLV70036DSE) with any other 3 V LDO (or an TLV70030DSE)?

Kind regards

This 

MSP-EXP430FR5969: Modify EXP430FR5969 to 3 V - MSP low-power microcontroller forum - MSP low-power microcontrollers...

e2e.ti.com
Part Number: MSP-EXP430FR5969 Other Parts Discussed in Thread: ENERGYTRACE Hello, I have the evaluation board TI MSP-EXPFR5969 with energy trace technology. It
 did not resolve the issue!

After trying and testing for hours I can not change the voltage. It stays constant at about 3.6 V. 

Looking at the document SLAU647L page 4 seems that only very few hardwares have adjustable voltage. Is this correct for the EXP5969 as stated in the first post?

So my first question remains, can I change the voltage to 3 V?

  • Hi Rudnik,

    The onboard eZ-FET of  MSP-EXP430FR5969  only support a fixed voltage power supply. You need change to the MSP-FET programmer and debugger , connect the pins of MSP-FET to the eZ-FET jumpers of MSP-EXP430FR5969, which supports target VCC to be selectable in a range between 1.8 V and 3.6 V in steps of 0.1 V. You could see the details on section 3.4&5 of this document: 

    http://www.ti.com/lit/ug/slau647l/slau647l.pdf

     

    For changing the target voltage supply, go to CCS project and right click your project name->Properties->Debug->MSP43x Options->Target Voltage

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