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Errors from IBIS model for LM4F232H5BB

Hi Team,

We provided our customer the IBIS model for LM4F232H5BB, and the  feedback is as below, could anyone help us with the technical questions?

Thanks!

1: Model GPIOHIB_PZ_3P3, the [Falling Waveform] with [R_fixture] = 50 Ohms and [V_fixture_min] = 0V has MIN column DC endpoints of 0.03V and 0.32V. But an equivalent load applied to the model’s I-V tables yields different voltages (0.00V and 0.32V).

2: Model GPIOHIB_PD_3P3, the [Rising Waveform] with [R_fixture] = 50 Ohms and [V_fixture_min] = 0V has MIN column DC endpoints of 0.00V and 0.27V. But an equivalent load applied to the model’s I-V tables yields different voltages (-0.00V and 0.31V).、

3: Model GPIOHIB_PD_3P3, the [Falling Waveform] with [R_fixture] = 50 Ohms and [V_fixture_min] = 0V has MIN column DC endpoints of 0.03V and 0.32V. But an equivalent load applied to the model’s I-V tables yields different voltages (-0.00V and 0.31V).

Thanks again!