Nuvoton N76E003

一眼呆

Nuvoton N76E003 [Copy link]

How to deal with the occasional failure to change the ADC channel?

bigbat

I suggest you try another solution. Basically, the ADC of their MCUs are not very good. Both 51 and Mx are the same. I have fallen into this trap before.

xl071310

I use this microcontroller quite often, and I haven't encountered the switching failure you encountered (I also switch several AD channels continuously):

This MCU uses VCC as the reference voltage. If you want to do AD, first of all, VCC must be accurate; secondly, you need to initialize the IO port and AINDIDS register (especially the AINDIDS register, don't forget it), and finally start the acquisition, wait for the acquisition to end, and read the conversion result.