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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...
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:
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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