Part Number: MSPM0G1507
Other Parts Discussed in Thread: MSPM0G3507
Hi experts,
I’m referring to this thread for guidance. I’m evaluating the sample project "adc12_internal_temp_sensor_mathacl" using the MSPM0G3507 EVM.
Q: When calculating "qVTrim" using "TEMP_SENSE0" (factory calibration value), should the "ADC_VREF_VOLTAGE" be 3.3V or 1.4V?
The datasheet section "8.13 Temperature Sensor" mentions 3.3V, while Chapter 16 of the TRM refers to 1.4V.
Additionally, the comment in "dl_factoryregion.h" lines 988–990 also mentions 1.4V.
/**
* @brief Get the ADC conversion results of temperature sensor output voltage
*
* Returns the temperature sensor output voltage at the factory trim temperature
* in ADC result code format. This ADC result code is based upon 12-bit
* sampling mode together with the 1.4-V internal voltage reference.
*
* @return The ADC conversion results of temperature sensor output voltage
*/
__STATIC_INLINE uint32_t DL_FactoryRegion_getTemperatureVoltage(void)
{
I’m confused, so I’d like to confirm which reference voltage is correct.
Best regards,
O.H
