Testing Waveforms
C161K
C161O
2.4 V
0.45 V
1.8 V
1.8 V
Test Points
0.8 V
0.8 V
AC inputs during testing are driven at 2.4 V for a logic 1’ and 0.45 V for a logic 0’.
Timing measurements are made at VIH min for a logic 1’ and VIL max for a logic 0’.
MCA04414
Figure 10 Input Output Waveforms
VLoad + 0.1 V
VLoad - 0.1 V
Timing
Reference
Points
VOH - 0.1 V
VOL + 0.1 V
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 VOH / VOL level occurs (IOH / IOL = 20 mA).
MCA00763
Figure 11 Float Waveforms
Data Sheet
40
V2.0, 2001-01