OLIMEX© 2015
MOD-IO2 user's manual
CHAPTER 1 OVERVIEW
1. Introduction to the chapter
Thank you for choosing the MOD-IO2 single board computer from Olimex! This document
provides a user’s guide for the Olimex MOD-IO2 board. As an overview, this chapter gives the
scope of this document and lists the board’s features. The differences between the members of the
MOD-IO2 and MOD-IO boards are mentioned. The document’s organization is then detailed.
The MOD-IO2 development board enables code development of applications running on the
microcontroller PIC16F1503, manufactured by Microchip.
1.1 Features
PIC16F1503 microcontroller
ICSP 6 pin connector for in-circuit programming with PIC-ICD2-POCKET and PIC-KIT3
or other compatible programmer/debugger.
9-pin terminal screw connector for 7 GPIOs 3.3V and GND
PWR jack for 12VDC
7 GPIOs which could implement different functionality as PWM, SPI, I2C etc.
2 relay outputs with 15A/250VAC contacts with screw terminals
RELAY output status LEDs
Both male and female UEXT connectors
Four mounting holes 3.3mm ~ (0.13)"
UEXT female-female cable included
FR-4, 1.5 mm (0.062"), soldermask, white silkscreen component print
dimensions 61×52mm ~(2.4×2.05)"
1.2 MOD-IO vs MOD-IO2
MOD-IO2 is a smaller input output extension module compared to MOD-IO both in terms of size
and in terms of functionality, however in a lot of situations MOD-IO2 might provide the better
choice. Designs which need optocouplers should consider MOD-IO. In a lot of the other cases
MOD-IO2 might be the better choice since it is possible to stack multiple MOD-IO2's over each
other.
MOD-IO has a better power supply with the option to be supplied in the range of 8-30VDC.
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