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DS18B20 temp sensor IC

PostPosted: Sun Jun 18, 2017 9:56 pm
by makiyoung
DS18B20 temp sensor IC Dq pin is connected to PSEN of controller in my application.

But in datasheet its mentioned that its connected to I/O port.

And second doubt is how I/O port senses temp? It should be connected to ADC pin of controller.

Re: DS18B20 temp sensor IC

PostPosted: Tue Jul 03, 2018 1:05 am
by JenniferT
DS18B20 is a digital Thermometer, therefore you don't need any ADC. DS18B20 communicates with microcontroller through 1-wire protocol. You can also implement 1-wire protocol using GPIO.