RedLab 1008 User's Guide
Specifications
30
Digital input / output (screw terminal DIO3:0)
Parameter Conditions
Specification
Digital type
Discrete, 5V/TTL compatible
Number of I/O
4
Configuration
4 bits, independently programmable for
input or output.
Input high voltage
3.0 V min, 15.0 V absolute max
Input low voltage
0.8 V max
No load
Vs - 0.4 V min, Vs typ
Output voltage (Note 4)
1 mA load
Vs - 1.5 V
Input leakage current
±1.0 µA
Output short-circuit current (Note 4)
Output high
3.3 mA
Power-up / reset state
Input mode (high impedance)
Note 4:
The DIO[3:0] lines available at the screw terminals are protected with 1.5 KOhm series resistors.
Digital input / output (DB37)
Digital type
82C55
Number of I/O
24 (Port A0 through Port C7)
Configuration
2 banks of 8 and 2 banks of 4, or 3 banks of 8
Pull up/pull-down configuration
All pins pulled up to Vs via 47K resistors (default). Positions available
for pull down to ground. Hardware selectable via zero ohm resistor.
Input high voltage
2.0 V min, 5.5 V absolute max
Input low voltage
0.8 V max, –0.5 V absolute min
Output high voltage (IOH = -2.5 mA)
3.0 V min
Output low voltage (IOL = 2.5 mA)
0.4 V max
External trigger
Parameter Conditions
Specification
Trigger source
External digital
DIO[3:0], only DIO may be selected as a trigger input
Trigger mode
Software selectable
Level sensitive: user configurable for TTL level high or low input.
Trigger latency
Burst
25 µs min, 50 µs max
Trigger pulse width
Burst
40 µs min
Input high voltage
3.0 V min, 15.0 V absolute max
Input low voltage
0.8 V max
Input leakage current
±1.0 µA
Summary of Contents for RedLab 1008
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