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Message: <blockquote data-quote="imhotep" data-source="post: 23496311" data-attributes="member: 562115">Not clear where you got this from.. For eg let's say, if you use a 8051 microcontroller with a  ADC804 chip which has a resolution of 8 bitsThe conversion time (the time it takes the ADC chip to convert the analog into a binary number) depends on the CLK R and CLK IN but the clock frequency has a limit - because the conversion time cannot be faster than 110 microsecs.The VREF/2 pin determines the step size for the conversion. If left open, the analog voltage is taken as in the range of 0 to 5 (Vcc) and the step size becomes 5/256 or 19.5mV.The digital data outputs D0 - D7 are read after the end of conversion ( when CS and RD forced low) and Digitalout  = Vin/Step Size as far as I can recollect <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";-)" title="Wink    ;-)" loading="lazy" data-shortname=";-)" /></blockquote>

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