SAB80C166 Datasheet, PDF (34/52 Pages) Siemens Semiconductor Group – 16-Bit CMOS Single-Chip Microcontroller

Testing Waveforms
SAB 80C166/83C166
AC inputs during testing are driven at 2.4 V for a logic ‘1’ and 0.4 V for a logic ‘0’.
Timing measurements are made at V_IH min for a logic ‘1’ and V_IL max for a logic ‘0’.
Figure 9
Input Output Waveforms
For timing purposes a port pin is no longer floating when a 100 mV change from load
voltage occurs, but begins to float when a 100 mV change from the loaded V_OH/V_OL level occurs
(I_OH/I_OL = 20 mA).
Figure 10
Float Waveforms
Semiconductor Group
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