Want to ask a question, I am using 51 development board to design a system, built-in ADC is XPT2046 development board, but the ADC is only an external signal interface, I now need to access 4 road testing analog signals, can be an ADC converter? Or how can solve this problem, a great god give advice or comments!

CodePudding user response:

Some peripheral device signals are can share this can save IO feet, 51 useless IO can also be used, and enlarge the IO chip, to many, want to learn, step by step

CodePudding user response:

reference 1st floor xuyaqi029 response:

some peripheral device signals are can share this can save IO feet, 51 useless IO can also be used, and enlarge the IO chip that way many, to learn, step by step

Thank you, I go to kangkang

CodePudding user response:

4 way AD chip, there are many kinds of connection mode SPI/I2C... Can go TI website

CodePudding user response:

reference 3/f, thought unceasingly, water response:

4 road there are many kinds of connection mode SPI/AD chip I2C... Can go TI website

Received, thanks (fuels)