The IO8S is a Frontend board that has been designed to fit onto a MicroX SBC Main Board with a frontend connector. This board will normally be used together with a MicroX SBC Main board. See picture to the right for an example of this board fitted to the SBC44EC board.

It makes 8 of the Main Board's port pins available via a 3.81mm 10 pin terminal block connector (Phoenix connector).

The 8 ports are:

• A0 - A5, C2 and C5 (Are usually routed to PIC pins RA0 - RA5, RC2 and RC5).
• Ports A0 - A3 have 1k resistors in series with them, so they can be used as analog or digital inputs. There are 4 solder straps situated next to the resistor network, that will short out the resistors when made. This can be usefull in case Ports A0 - A3 are used as outputs.

When connected to a MicroX Main Board (SBC), it can provide the SBC with power by supplying power to the terminal block pins 9 and 10. Note, when doing this no power should be applied to the SBC!

Frontend connector pin B6 (Usually routed to PIC port pin RB6) is connected to a red LED.

It is fully assembled, and supplied with the terminal block connector and plug as shown in the photo above.

The board schematics and PCB layout can be downloaded here.