PCAN-MicroMod Evaluation Kit
User Manual
3
Components of the
Evaluation Board
This chapter describes the primary function units and connectors of
the Evaluation Board. For details you can also refer to the circuit
diagram in Appendix B.
3.1
MicroMod (Mounting)
When you mount the MicroMod, take notice of the white triangular
marks on each the Evaluation Board and the MicroMod (upper left
corner). These marks must align. Another help may be the
orientation of the labels. With mounted MicroMod the labels have
the same orientation on both PCBs (not upside down).
3.2
Digital Inputs
The Evaluation Board has 8 digital inputs with TTL levels. The
corresponding connector is J3 (screw terminal on the lower left).
Each input has a pull-up resistor (10 k
Ω
) and is low-active, so the
inputs are switched against GND. Each input status is indicated by
an LED. For test purposes the input signal can be switched with the
dip switch S1. The corresponding switches are labeled "Din0" to
"Din7". The inputs have a low-pass filter with 100 k
Ω
/100 nF.
Signals
leading directly to the
MicroMod
can be picked off at the
measuring points on strip J20, positions 6 to 13 (position 1 is the
upper one).
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