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Pico E-15 Hardware Reference
www.picocomputing.com
Pico Computing
(206) 283-2178
150 Nickerson Street. Suite 311
Seattle, WA 98109
17
Digital Peripheral Interface
The Pico E-15 features 2 GPIO lines which are used for external peripheral support. The GPIO
lines are always enabled.
All GPIO signals have user selectable pull-up, pull-down, keeper or HI-Z termination. Drive
strength is also user selectable between 2 and 24mA. All GPIOs can be configured for input,
output and bi-directional mode.
GPIO 1 has a 50 ohm resistor in series with the output to allow connectivity with low voltage
devices which may clamp a 3.3V signal.
Electrical Specifications Minimum Nominal Maximum
High Voltage 2.0V 3.3V 3.45V
Low Voltage -0.2V 0V 0.8
Input Impedance (Pulldowns Disabled) HI-Z
Drive Strength (Selectable) 2 mA 24 mA
ESD Withstand Voltage (Human Body Model)
2 KV