| Specifications |
| Power consumption |
| +5V operating |
240 typical, 350 max |
| Digital input/output |
| 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 |
3.7 volts min @ -2.5 mA |
| Output low |
0.4 volts max @ 2.5 mA |
| Input high |
2.2 volts min, 5.3 volts absolute max |
| Input low |
0.8 volts max, -0.3 volts absolute min |
| Power-up/reset state |
Input mode (high impedance) |
| Interrupts |
INTA# - mapped to IRQn via PCI BIOS at boot-time |
| Interrupt enable |
External (IR ENABLE, active low, disabled by default through internal resistor to TTL high) and programmable through PCI9052; 0 = disabled, 1 = enabled (default) |
| Interrupt sources |
External source (IR INPUT), polarity programmable through PCI9052;
1 = active high, 0 = active low (default) |
| Environmental |
| Operating temperature range |
0 to 50 °C |
| Storage temperature range |
-20 to 70 °C |
| Humidity |
0 to 90% non-condensing |
