Original question:
MSP430AFE253: Firmware question for TIDM-MSP430AFE253SUBMETEREVM soluiton
Hi All
We input voltage 0.455V into SD24 ADC pin, and set internal reference 1.2V, we expect the ADC value should be 0.455*（2^24-1）/1.2=6361360
However we try to read ADC result by several times and found result has much difference as below, do you think if any possible reason?
6813306 6791826 6596934
6926496 6953734 6166032
7956268 7248024 6384816
7532230 7626950 6673594
8247180 8416324 7396284
7175816 7252200 6155190
Hello Terry,
What mode are you using? Twos-Complement or Offset Binary? What alignment are you using? Left or right? I would encourage you to read through the SD24_B section in the MSP430x5xx/x6xx User's Guide, specifically Table 29-3. This should help.
Regards,
James
MSP Customer Applications
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