Measurement Computing CIO-INT-32 - Manual (Page 13)

4.0 SPECIFICATIONS
Typical for 25°C unless otherwise specified.
Power consumption
+5V Operating 440 mA typical, 720 mA max
Counter/Timer and Parallel I/O
Device Zilog Z85C36 (2)
Output High 2.4 volts min @ -250uA
Output Low 0.5 volts max @ +3.2 mA
Input High 2.0 volts min, 7 volts absolute max
Input Low 0.8 volts max, -0.3 volts absolute min
Power-up / reset state Input mode (high impedance)
Configured as Digital Input/Output Ports:
Digital Configuration 4 banks of 8 (Ports A and B), 2 banks of 4
(Port C), programmable by bit or bank as input
or output
Number of channels 40 I/O
Configured as Counter/Timers: (Port A is a Digital I/O port only)
Counter type Zilog Z85C36
Counter Configuration 6 16-bit counter/timers (Port B - High and Low
nibble - and Port C)
All Trigger (C1-C3 TRIG), Source (C1-C3
IN), Gate (C1-C3 GATE), and Output (C1-C3
OUT) available at user connector.
Clock input frequency 3Mhz max
High pulse width (clock input) 150ns min
Low pulse width (clock input) 150ns min
Trigger pulse width (high,low) 130ns min
Interrupts:
The Z8536 is programmable to generate interrupts based on bit change, pattern
recognition, level or edge triggered, whether configured as a digital I/O port or
counter port. See Z8536 manual for further options.
Interrupts Levels 2 through 7, jumper selectable (IRQ
LEVEL)
Interrupt enable Jumper selectable (IRQ LEVEL) and external
(INT ENABLE), active low (pulled high
through resistor).
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