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interfacing i2c 3.3v device with a PIC of 5v

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amico

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Hello all

my Microchip pic 16F877 uses 5V Vcc,

and i need to interface it with my i2c ambient light sensor which use 3.3V Vcc.

my questions are:

1. Does the PIC and light sensor can commuincate or since they have differnte logic levels its not possible?

2. what about the NXP PCA9512 levelshifter component ?
can it do the job? does it work? do i need it?

attached:

NOA1302 light sensor.
PIC16F877 Micro.
NXP level shifter.


Thanks,

amico.

attached
 

Thanks for the answer.

can I trust the NXP PCA9512 level shifter to do the job?

does anyone have any experience with this component or can recommend another level shifter for my application?

Thanks.
 

Hi! I've just had got that problem in my final degree project, and I've applied that solution:

**broken link removed**

I'm using a IRF510S as mosfets, but you can use other one. It's working, and I can see the bus pulses in a oscilloscope:

96729b28c3a93b8bfc50c082b3e324eao.jpg


Good luck! :)
 

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