I have a I2C master that work with 5.0 volt and a 3.3 volt slave.
The master is a pic16C84 and the slave is a cmos sensor. I can't use the
open connector pin RA4 of pic. I use a portB pin.
How can I resolve the voltage problem?
Can work this circuit?


-----                                                    -----
    |     56K                         I2C DATA LINE      |
PIC |---/\/\/\-------------------------------------------|CMOS
    |                        |                           |
-----                       ---                          -----
                            \ / Diode
                             -
                             |
                    ?        |           ?
      (5V)VCC----/\/\/\----------------/\/\/\-------GND
                            2,8volt

T.I.A.
Alboni Giorgio