SERIES IOS-440 I/O SERVER MODULE 32-CHANNEL ISOLATED DIGITAL INPUT MODULE
_________________________________________________________________________________________
- 14 -
Acromag, Inc. Tel:248-295-0310 Fax:248-624-9234 Email:[email protected] http://www.acromag.com
Turn-Off Time.............................Measured to the point of
negative event interrupt detection
(IntReq0 pulled low) - 15us
Typical (25 C) for a threshold to
0V input step. Time increases
as magnitude of the step value is
increased from the threshold.
Input Debounce..........................Each input includes debounce
circuitry with variable debounce
times. Debounce times are
programmable and derived from
the 8MHz system clock, in
combination with the debounce
duration register value.
Debounce times are applied at
the FPGA input and do not
include opto-coupler delay time.
Debounce values of 4us, 64us,
1ms, and 8ms may be
configured. Each debounce time
has an error of up to ±375ns.
Interrupts....................................Each channel has configurable
interrupts. They may be
configured for high-to-low, low-
to-high, and change-of-state
(two channels required) event
types.
Forward Voltage Drop................1.1V Typical, 1.3V Maximum
(Diode) + I*R. Series input
current-limiting resistors are 10K
(IOS-440-2).
Input Current..............................Varies by input signal voltage
level. For Model IOS-440-2, the
current is computed by dividing
the signal level minus 1.1V
(TYP), by its current limiting
resistor 10000 .
