Measurement-computing CIO-DIO24 Manual de usuario descargar pdf (Pagina 17)

Chapter 5

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 82C55

Configuration 2 banks of 8, 2 banks of 4, programmable by bank as input or output

Number of channels 24 I/O

Output high 3.0 volts min @ -2.5 mA

Output low 0.4 volts max @ 2.5 mA

Input high 2.0 volts min, 5.5 volts absolute max

Input low 0.8 volts max, -0.5 volts absolute min

Power-up / reset state Input mode (high impedance)

Interrupts 2 through 7, jumper selectable

Interrupt enable External (IR Enable), logic low enabled (disabled by default via internal

10k resistor to +5V)

Interrupt sources External (IR Input), rising edge

Miscellaneous Locations provided for installation of pull-up or pull-down resistors.

Power consumption

Table 2. Power consumption specifications

Parameter Specification

+5V 170 mA typical, 270 mA max

Environmental

Table 3. Environmental specifications

Operating temperature range 0 to 70 °C

Storage temperature range -40 to +100 °C

Humidity 0 to 90% non-condensing

1 2 ... 12 13 14 15 16 17 18 19 20

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Measurement-computing CIO-DIO24 Manual de usuario Pagina 17