Datasheet

&3,
Data Sheet 53 1999-07

Testing Waveforms
Figure 14 Input Output Waveforms
Figure 15 Float Waveforms
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
9
IH
min for a logic ’1’ and 9
IL
max for a logic ’0’.
2.4 V
0.45 V
Test Points
1.8 V 1.8 V
0.8 V 0.8 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
9
OH
/9
OL
level occurs (,
OH
/,
OL
= 20 mA).