SIMM101 is an embedded microcontroller board built upon the SimmStick™ standard with surface mounted technique to get a small layout with only the core functions of a Microcontroller (AT90S2313) with minimal peripherals (Reset, RS232 Tranceivers and Power) and to leave a big sea of holes for your own prototyping.
Further more the SIMM101 is backwards compatible with the DT104 from Dontronics (wires from microcontroller to SimmStick bus and the RS232 signals), so it is easy to migrate to the new SMD technology. To program the SIMM101 is easy, since it support ISP (In System Programming) via the SimmStick bus and a good programming platform is the DT006 board.
Finally the SIMM101 can be powered with either +5VDC or 7-18VDC since there is an on board voltage regulator (5V/100mA) that can be enabled via a 2mm jumper (J1 is OPEN from factory i.e. 5VDC Power supply).
The SIMM101 is completly assembled, tested and comes with a pre-programmed software written in BASCOM-AVR. This software blinks the red general purpose LED and prints out "SIMM101 by LAWICEL/SWEDEN" on the RS232 using 9600baud.
The reason for this pre-programmed software is for you to test that the board is working properly when it arrives to you, so you dont have to spend time trouble shooting a broken board or a faulty programmer etc. when you try to program it first time. You simply power it up and if LED blinks you know the board is working properly and you could start making your own software.
Each board has been programmed at the factory and has been test run for at least 1 hour prior to package, this to make the initial burn-in test so we know all works.
Click on the Schematics to enlarge
The jumper J1 is OPEN from factory, meaning the SIMM101 can only be supplied with +5VDC on pin 7 of the SimmStick bus (from e.g. the DT006). If the jumper J1 is closed you may not supply it with +5VDC, instead 7-18VDC on pin 4 of the SimmStick buss.
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Last updated on the 2nd of March 2007