ONYX-MM is a PC/104-compliant I/O module with 48 digital I/O lines, 3 16-bit counter/timers, and 3 interrupts. It is an 8-bit module, so it does not contain the 16-bit expansion bus connector. This connector is available as an option by requesting the -B16 suffix when ordering.
Three right-angle pin headers are provided for I/O. Two identical 50-pin (2x25) headers contain 24 digital I/O lines each and +5/ground, and a third 14-pin (2x7) header provides the counter/timer signals, external interrupt pin, and +5/ground. J2, with 24 digital I/O lines, is on the right side of the module in the standard PC/104 I/O position. J3, with 24 additional digital I/O lines, is on the left side of the module, and J4, with the counter/timer and interrupt signals, is on the top edge of the module. (The bottom edge of the module is defined as the edge with the PC/104 ISA bus connectors.)
All I/O signals are TTL compatible.
The boards operate on +5V power supply only.
| File | Description | |
| onyx_spec.pdf | Onyx-MM Spec Sheet | |
| onyx_man.pdf | Onyx-MM Manual |
| Part Number | Description | Status |
| OMM-XT | Onyx-MM 48 digital I/O + 3 counter/timers extended temp. |