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PIN 3 & 4 use as UART and ADC and impact on ADC values

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I suspect the short answer to "simultaneously" is no. And, I also suspect challenging, if at all possible to use for both comm and adc. However, you could use the UART on P1.1 and P1.2 (3 & 4) for comm, then take your analog ADC readings on P1.4 and/or P1.5 (6 & 7).  Working with the msp430 devices will be easier to ask questions about if you adopt their (TI's) naming convention since the pins are generally multiplexed and can have several functions.

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> Very Sad... now i only can use 6 ADC pin out of 8

So, the 'G2 is the only option? I assume you're aware there are 500+ '430 variants?  If your budget is limited, you may want to look at the '5529 launchpad; you can have all 8 ADC channels (with a 12-bit adc), the UART, SPI, I2C and significantly more flash and ram for about $2.00 more... Oh, and USB capabiltiy too.

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