Main i/o connector – adac/5501mf and adac/5502mf – Measurement Computing ADAC/5500 Series User Manual
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6.2.4
Digital Inputs / Outputs – ADAC/5501MF and ADAC/5502MF
Number:
16 accessible from main I/O connector,
32 accessible from two auxiliary I/O connectors
6.2.4.1 Main I/O Connector – ADAC/5501MF and ADAC/5502MF
Number:
16 accessible from main I/O connector
I/O Direction Select:
Software selectable in groups of eight
Register:
Two 8 bit registers configurable as either inputs or outputs.
Inputs are unlatched read-only.
Data Coding:
Positive logic
Input Level:
5.0V/3.3 V CMOS/LSTTL compatible with 4.7 K ohm
pull-up resistor
High Level Input Voltage:
2 V min.
Low Level Input Voltage:
0.8 V max.
High Level Output Voltage:
2.4 V
Low Level Output Voltage:
0.4 V
Maximum Output Current:
Low: 24 mA (sinking)
High: 24 mA (sourcing)
6.2.4.2 Auxiliary Digital I/O Connectors – ADAC/5501MF and ADAC/5502MF
Number:
32 accessible from 2 Auxiliary Digital I/O connectors
I/O Direction Select:
Software selectable in groups of sixteen.
Register:
Two 16 bit registers configurable as either inputs or
outputs. Inputs are unlatched read-only.
Data Coding:
Positive logic
Input Level:
5.0V/3.3V CMOS/LSTTL compatible with 4.7 K ohm
pull-up resistor
High Level Input Voltage:
2 V min.
Low Level Input Voltage:
0.8 V max.
High Level Output Voltage:
2.4 V
Low Level Output Voltage:
0.4 V
Maximum Output Current:
Low: 24 mA (sinking)
High:24 mA (sourcing)
ADAC Series
908196
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ADAC/5500 Series User’s Manual