Initially I connected mechanical switch directly to port of the microcontroller PIC 16f887 to act as digital input.

Now in place of that switch I need to use proximity sensor

Avago’s APDS-9120 (integrated optical proximity sensor)​

Does anyone have an idea how to interface this sensor with the pic?​

Please let me know
Thanks​

 

I just looked at the data sheet http://www.avagotech.com/docs/AV02-1937EN and it has analog and digital outputs. The digital output can connect direct to a PIC digital input. The datasheet recommends a pull-up resistor of 10K. The internal pull-up on the PIC is weaker than this but will probably work. Depends how fast it is going to switch. The analog output needs an integration capacitor and could be connected to a PIC ADC input direct. Or use an external comparator. Some PICs have comparators built-in.

Note. This sensor has a recommended supply voltage of 2.4V to 3.6V but the PIC will also work at this voltage.

Can't see a problem really.

 

Digital output of that sensor is max 0.3V

whereas the voltage on the pin of PIC16f887 is max Vdd+0.3

I think some signal conditioning circuit will be required if I have to use that digital output of sensor as digital input to pic

Also I would like to know if I need to provide the burst pulse continuously to drive LEDON(pin5)

Thanks