Port Descriptions
27
GPIO Port, P7
The GPIO port is a 9-pin male right-angle connector that is labeled as P7 on the development board.
See the following figure for pin orientation; see the following tables for pin assignments. For input
and output threshold specifications, see "DC Characteristics" on page 49. Note that each signal has a
220 ohm series resistor between the P7 pin and the module (except GND).
Note:
The development board is shipped with a 9-pin screw-flange plug attached to the GPIO
port.
GPIO Port Pin Orientation
GPIO Port Pin Assignments
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9
Signal GPIO-1 GND GPIO-2 GND GPIO-3 TXD_TTL GPIO-4 RXD_TTL GPIO-5
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