Prototyping Area - Rabbit RabbitCore User Manual

A 2 × 4 header strip with a 0.1" pitch can be installed at J4, and jumpers across the appro-
priate pins on header J4 can be used to reconnect specific demonstration hardware later if
needed. Each pin is labeled on the PCB to facilitate placing the jumpers. The jumper posi-
tions are summarized in Table B-8.
Table B-8. RCM3720 Prototyping Board Jumper Settings
Pins
1–2
3–4
5–6
7–8
B.2.4.1 Prototyping Area
There is a 1.8" × 2.4" through-hole prototyping space available on the RCM3720 Proto-
typing Board. The holes in the prototyping area are spaced at 0.1" (2.5 mm). +5 V and
ground traces run along the bottom edge of the prototyping area for easy access. Small to
medium circuits can be prototyped using point-to-point wiring with 20 to 30 AWG wire
between the prototyping area, the +5 V, and ground traces, and the surrounding area where
surface-mount components may be installed. Small holes are provided around the surface-
mounted components that may be installed around the prototyping area.
There are six sets of pads (three on each side) for 16-pin devices that can be used to surface-
mount SOIC devices. There are also pads that can be used for SMT resistors and capaci-
tors in an 0805 SMT package. Each component has every one of its pin pads connected to
a hole in which a 30 AWG wire can be soldered (standard wire-wrap wire can be soldered
in for point-to-point wiring on the RCM3720 Prototyping Board). Because the traces are
very thin, carefully determine which set of holes is connected to which surface-mount pad.
User's Manual
Header J4
Signal Description
PF4
PB7
PF6
PF7
Demonstration Hardware
Switch S1
Switch S2
LED DS1
LED DS2
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