Specifications
All specifications are subject to change without notice.
Typical for 25 °C unless otherwise specified.
Power consumption
+5V operating
Digital I/O
Digital type
Configuration
Number of channels
Output high
Output low
Input high
Input low
Power-up / reset state
Interrupts
Interrupt enable
Interrupt sources
Environmental
Operating temperature range
Storage temperature range
Humidity
Table 1. Power consumption specifications
240 typical, 350 max
Table 2. DIO specifications
82C55
Two banks of 8, two banks of 4, programmable by bank as input or output
24 I/O
3.7 volts min @ –2.5 mA
0.4 volts max @ 2.5 mA
2.2 volts min, 5.3 volts absolute max
0.8 volts max, –0.3 volts absolute min
Input mode (high impedance)
INTA# - mapped to IRQn via PCI BIOS at boot-time
External (IR ENABLE, active low, disabled by default through internal resistor to
TTL high) and programmable through PCI9052.
0 = disabled, 1 = enabled (default)
External source (IR INPUT), polarity programmable through PCI9052.
1 = active high, 0 = active low (default)
Table 3. Environmental specifications
0 °C to 50 °C
–20 °C to 70 °C
0 to 90% non-condensing
11
Chapter 4
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