Hi
I have question for MADC useing resister setting.
We want to use MADC 6 ch as normal ADC.
But we connected divider Voltage just 1V, but ADC result was 0.28V.
We already know about "Table9-4 MADC Channel Prescaler Divide Ratio".
But we can not measure Voltage as normal ADC.
We setting
15.4.11.1 MADC Monitoring Using MCPC Pins as ADCIN3~6
CARKIT_ANA_CTRL[3] SEL_MADC_MCPC bit => 1
but , this resister ,we can write normal when connected USB, but we could ' t write
this resister without USB connect.
If ADCin 6ch Voltage measure is correct value value, but not connect USB ADCin 6ch
measure Voltage is not correct.
Question
Dose we need other resister setting?
"CARKIT_ANA_CTRL[3] SEL_MADC_MCPC bit => 1 " only is not enough?
Could you give us Idea?
Regard
Jasper