Hi All ,
I have 2 questions here ,
I am using 8051 mC and when using porto , it says I have to connect it to pullup resistor . I know pullup resistor is not for mC work only it has a general function I want to know it well .
Second question ,
For clock generation a crsytal oscillator is used as picture above.when connecting the crystal oscillator , they also connect 2* 30pF capacitors I want to know their function , why they are here ?
also the reset pin has the capacitor and resistance. why they are here and what determines their values ?.
Thanks in advance .
I have 2 questions here ,
I am using 8051 mC and when using porto , it says I have to connect it to pullup resistor . I know pullup resistor is not for mC work only it has a general function I want to know it well .
Second question ,
For clock generation a crsytal oscillator is used as picture above.when connecting the crystal oscillator , they also connect 2* 30pF capacitors I want to know their function , why they are here ?
also the reset pin has the capacitor and resistance. why they are here and what determines their values ?.
Thanks in advance .