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Chapter 4 Signal Connections
National Instruments Corporation 4-13 AT-MIO/AI E Series User Manual
PFI5/UPDATE* DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
PFI6/WFTRIG DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
PFI7/STARTSCAN DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
PFI8/GPCTR0_SOURCE DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
PFI9/GPCTR0_GATE DIO — V
cc
+0.5 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
GPCTR0_OUT DO — — 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
FREQ_OUT DO — — 3.5 at (V
cc
-0.4) 5 at 0.4 1.5 50 kΩ pu
AI = Analog Input DIO = Digital Input/Output pu = pullup
AO = Analog Output DO = Digital Output
Note: The tolerance on the 50 kΩ pullup and pulldown resistors is very large. Actual value may range between
17 kΩ and 100 kΩ.
Table 4-3. I/O Signal Summary, AT-MIO-16XE-10 and AT-AI-16XE-10 (Continued)
Signal Name Drive Impedance
Input/
Output
Protection
(Volts)
On/Off
Source
(mA at V)
Sink
(mA at
V)
Rise
Time
(ns)
Bias