X930A Datasheet, PDF (33/38 Pages) Intel Corporation – UNIVERSAL SERIAL BUS MICROCONTROLLER

8x930Ax UNIVERSAL SERIAL BUS (USB) MICROCONTROLLER
5.7 Testing Waveforms
V_CC – 0.5
0.45 V
Inputs
0.2 V_CC + 0.9
0.2 V_CC – 0.1
Outputs
V_IH MIN
V_OL MAX
AC inputs during testing are driven at V_CC – 0.5V for a logic 1
and 0.45 V for a logic 0. Timing measurements are made at
a min of V_IH for a logic 1 and V_OL for a logic 0.
Figure 18. AC Testing Input, Output Waveforms
A4118-01
V_LOAD + 0.1 V
V_LOAD
V_LOAD – 0.1 V
Timing Reference
Points
V_OH – 0.1 V
V_OL + 0.1 V
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 100 mV change from the loading V_OH/V_OL level occurs
with I_OL/I_OH = ± 20 mA.
Figure 19. Float Waveforms
A4117-01
ADVANCE INFORMATION
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