Digital i/o, Timing i/o – National Instruments AT E Series User Manual

Page 113

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Appendix A

Specifications for AT-MIO-16E-1, AT-MIO-16E-2, and AT-MIO-64E-3

AT E Series User Manual

A-8

ni.com

Digital I/O

Number of channels................................8 input/output

Compatibility ..........................................TTL/CMOS

Digital logic levels

Power-on state ........................................Input (High-Z)

Data transfers ..........................................Programmed I/O

Max transfer rate (1 word = 8 bits).........50 kwords/s, system dependent

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 scalers ............................4 bits

Compatibility ..........................................TTL/CMOS

Base clocks available

Counter/timers .................................20 MHz, 100 kHz

Frequency scalers ............................10 MHz, 100 kHz

Base clock accuracy................................±0.01%

Max source frequency.............................20 MHz

Level

Min

Max

Input low voltage

0 V

0.8 V

Input high voltage

2 V

5 V

Input low current (V

in

= 0 V)

–320 µA

Input high current (V

in

= 5 V)

10 µA

Output low voltage (I

OL

= 24 mA)

0.4 V

Output high voltage (I

OH

= 13 mA)

4.35 V

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