ONYX-MM-DIO Low-Cost 48-Line Digital I/O PC/104 Module • 48 digital I/O lines • Programmable port directions • All lines power up in input mode • Dual 50-pin I/O headers • Low cost • Software and technical manual included If you're looking for a basic 48-line digital I/O PC/104 module, then Onyx-MM-DIO is what you need. This module is the same as our Onyx-MM digital & counter/timer module but without the counter/timer and interrupt circuitry. This board still has the quality and attention to detail of our other modules, such as: 10K Ohm pull-up resistors on all I/O lines; all ports reset to 0 on power-up or system reset; connector pinouts compatible with our other digital I/O boards; and free software. Digital I/O lines DIO Input voltage The 48 digital I/O lines on Onyx-MM-DIO are based on 2 82C55 ICs. They can be programmed for input or output in groups of 8 lines. Direct as well as strobed (latched) I/O modes are supported, and all I/O lines are connected to 10K Ohm pull-up resistors. ORDERING INFORMATION Part No. OMM-DIO-XT Programmable I/O Output Current (Max per line) Fixed I/O and Counter / Timers Output Current Counter / Timers Clock Bus Interface Dimensions Input Power Power Draw (typical) Operating temp Description Onyx-MM 48 Digital I/O only Extended Temperature Weight Digital I/O lines DIO Input voltage DIO Output voltage Diamond Systems Corporation 1255 Terra Bella Avenue Mountain View, CA 94043 Tel: 650-810-2500 Fax: 650-810-2525 [email protected] 48 programmable direction Logic 0: -0.5V min, 0.8V max Logic 1: 2.0V min, 5.5V max Logic 0: 0.0V min, 0.4V max Logic 1: 3.0V min, Vcc-0.4V max ±2.5mA per line