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I2C ON P89C51RD2(Philips micro controller)

G PRASHANTHA

sir,
i want to do project on i2c
P89C51RD2 (PHILIPS UC)which doen't contain
I2C controller.

how to implement i2c on that.
pls send codes for that

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  • 0 in reply to erik malund


    Yes, I meant that you could use PIO pins such as those on port 1 as the clock and data lines for the I2C interface. Software will have to toggle the two pins appropriately to make it look like an I2C transaction to the other device(s).

    I suggested that you might want the Philips I2C spec simply so that you'd be sure how to program your emulated I2C interface. I wasn't even thinking of the physical connection, but rather the logical waveforms that need to appear on those two pins.

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  • 0 in reply to erik malund


    Yes, I meant that you could use PIO pins such as those on port 1 as the clock and data lines for the I2C interface. Software will have to toggle the two pins appropriately to make it look like an I2C transaction to the other device(s).

    I suggested that you might want the Philips I2C spec simply so that you'd be sure how to program your emulated I2C interface. I wasn't even thinking of the physical connection, but rather the logical waveforms that need to appear on those two pins.

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