43

AT8xC51SND1C

4106F–8051–10/02

Figure 31. AC Testing Input/Output Waveforms

Notes:

1. During AC testing, all inputs are driven at

V

Figure 32. Float Waveforms

Note:

For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs and begins to float when a

0.45 V

0.7

V

DD

0.3

INPUTS

OUTPUTS

Timing Reference Points