CIO-DIO24/CTR3

Specifications

Document Revision 7.1, February, 2010
© Copyright 2010, Measurement Computing Corporation

Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Digital Input / Output
Table 1. Digital input/output specifications
Digital type
Configuration
Number of channels
Output highOutput low
Input highInput low
Power-up / reset state
Interrupts
Interrupt enable

82C55
2 banks of 8, 2 banks of 4, programmable by bank as input or output
24 I/O
3.0 volts min @ -2.5 mA
0.4 volts max @ 2.5 mA
2.0 volts min, 5.5 volts absolute max
0.8 volts max, -0.5 volts absolute min
Input mode (high impedance)
2 through 7, jumper selectable
External (IR Enable), logic low enabled (disabled by default via internal
10k resistor to +5V)
External (IR Input), rising edge
Locations provided for installation of pull-up or pull-down resistors.

Interrupt sources
MiscellaneousCounters
Table 2. Power consumption specifications
Counter type
Configuration
Counter 0 - independent, user configurable

Counter 1 - independent, user configurable

Counter 2 - independent, user configurable

Clock input frequency
High pulse width (clock input)
Low pulse width (clock input)
Gate width highGate width low
Input low voltage
Input high voltage
Output low voltage
Output high voltage

82C54
3 down counters, 16-bits each
Source:User connector (CLK0) and optionally, 10MHz
on-board xtal oscillator, selectable by jumper
Gate:
User connector (GATE0)
Output:User connector (OUT0) and optionally, counter 1 clock
input, selectable by jumper
Source:User connector (CLK1) and optionally, counter 0
output, selectable by jumper
Gate:
User connector (GATE1)
Output:User connector (OUT1) and optionally, counter 2 clock
input, selectable by jumper
Source:User connector (CLK2) and optionally, counter 1
output, selectable by jumper
Gate:
User connector (GATE2)
Output:User connector (OUT2)
10 MHz max
30 ns min
50 ns min
50 ns min
50 ns min
0.8 V max
2.0 V min
0.4 V max
3.0 V min2

CIO-DIO24/CTR3

Specifications

Power consumption
Table 3. Power consumption specifications
Parameter

Specification+5V

190 mA typical, 300 mA max

Environmental
Table 4. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 70 °C-40 to +100 °C
0 to 90% non-condensing

Main connector and pin out
Table 5. Connector specifications
Connector typeCompatible cables

Compatible accessory products with theC37FF-x cable and C37FFS-x cable

37-pin male "D" connector
C37FF-x
C37-FFS-x
DFCON-37 (D-connector, D-shell, and termination pins to construct yourown cable)
CIO-MINI37
CIO-SPADE50
SSR-RACK08
SSR-RACK24
CIO-ERB08
CIO-ERB24
Table 6. Connector pin outPin12345678910111213141516171819Signal Name
IR Input
IR Enable
FIRSPORTB Bit 7
FIRSPORTB Bit 6
FIRSPORTB Bit 5
FIRSPORTB Bit 4
FIRSPORTB Bit 3
FIRSPORTB Bit 2
FIRSPORTB Bit 1
FIRSPORTB Bit 0
GND
GATE 2
CLK 2
OUT 1GATE 1
CLK 1
OUT 0
GATE 0
CLK 0Pin202122232425262728293031323334353637Signal Name+5V
GND
FIRSPORTC Bit 7
FIRSPORTC Bit 6
FIRSPORTC Bit 5
FIRSPORTC Bit 4
FIRSPORTC Bit 3
FIRSPORTC Bit 2
FIRSPORTC Bit 1FIRSPORTC Bit 0
FIRSPORTA Bit 7
FIRSPORTA Bit 6
FIRSPORTA Bit 5
FIRSPORTA Bit 4
FIRSPORTA Bit 3
FIRSPORTA Bit 2
FIRSPORTA Bit 1
FIRSPORTA Bit 03

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CIO-DI024_CTR3-spec.doc