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Con_3 - In-Circuit Progamming Connector
The in-circuit programming connector, Con_3, is used to download new versions of
firmware to the main CPU. This is a 10 pin header connector designed to be used for in-
circuit programming with an ME Labs in-circuit programmer.
General Purpose I/O Connector
The GPIO connector provides 24 I/O signals that can be used for a variety of purposes.
The signals inlcude 8 TTL level digital inputs with internal logic pullups, 8 open
collector buffered outputs, 8 analog to digital converter inputs and ground.
All 24 I/O signals are protected from over voltage conditions using transient voltage
suppression devices.
Pin Use
1 Analog input
2 Analog input
3 Analog input
4 Analog input
5 Digital output
6 Digital output
7 Digital output
8 Digital output
9 Digital input
10 Digital input
11 Digital input
12 Digital input
13 Digital input
Pin Use
14 Analog input
15 Analog input
16 Analog input
17 Analog input
18 Digital output
19 Digital output
20 Digital output
21 Digital output
22 Digital input
23 Digital input
24 Digital input
25 Ground
Digital inputs are pulled up with a 10k resistor and must be either ground or +5 VDC.
Analog inputs must be between 0 and +5V.
Digital outputs are buffered open collector outputs that can sink up to 500 ma.