SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
• 8 × Programmable I/O (PIO) state machines for custom peripheral support
• Supported input power 1.8–5.5V DC
• Operating temperature -20°C to +85°C
• Castellated module allows soldering direct to carrier boards
• Drag-and-drop programming using mass storage over USB
• Low-power sleep and dormant modes
• Accurate on-chip clock
• Temperature sensor
• Accelerated integer and floating-point libraries on-chip
1.2 Pico’s Pins
Name Description Function
GP0-GP28 General-purpose input/output
pins
Act as either input or output and have no fixed purpose of their
own
GND 0 volts ground Several GND pins around Pico to make wiring easier.
RUN Enables or diables your Pico Start and stop your Pico from another microcontroller.
GPxx_ADCx General-purpose input/output
or analog input
Used as an analog input as well as a digital input or output –
but not both at the same time.
ADC_VREF Analog-to-digital converter
(ADC) voltage reference
A special input pin which sets a reference voltage for any ana-
log inputs.
AGND Analog-to-digital converter
(ADC) 0 volts ground
A special ground connection for use with the ADC_VREF pin.
3V3(O) 3.3 volts power A source of 3.3V power, the same voltage your Pico runs at
internally, generated from the VSYS input.
3v3(E) Enables or disables the power Switch on or off the 3V3(O) power, can also switches your
Pico off.
VSYS 2-5 volts power A pin directly connected to your Pico’s internal power supply,
which cannot be switched off without also switching Pico off.
VBUS 5 volts power A source of 5V power taken from your Pico’s micro USB port,
and used to power hardware which needs more than 3.3V.
4 Chapter 1. Introduction to Raspberry Pi Pico
