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Appendix A Specifications for AT-MIO-16XE-50
© National Instruments Corporation A-35 AT E Series User Manual
Digital logic levels
Power-on state........................................ Input (high-impedance)
Data transfers ......................................... Programmed I/O
Maxtransferrate(1word=8bits)........50kwords/s,systemdependent
Constant sustainable rate........................ 1 to 10 kwords/s, typical
Timing I/O
Number of channels ............................... 2 up/down counter/timers,
1 frequency scaler
Resolution
Counter/timers ................................ 24 bits
Frequency scaler ............................. 4 bits
Compatibility ......................................... TTL/CMOS
Base clocks available
Counter/timers ................................ 20 MHz, 100 kHz
Frequency scaler ............................. 10 MHz, 100 kHz
Base clock accuracy............................... ±0.01%
Max source frequency............................ 20 MHz
Min source pulse duration...................... 10 ns, edge-detect mode
Min gate pulse duration.......................... 10 ns, edge-detect mode
Level Min Max
Input low voltage 0V 0.8 V
Input high voltage 2V 5V
Input low current (V
in
=0V) — –320 µA
Input high current (V
in
=5V) — 10 µA
Output low voltage (I
OL
=24mA) — 0.4 V
Output high voltage (I
OH
=13mA) 4.35 V —