Loading source-backed pinouts…
Microcontroller · Development Board
SparkFun RedBoard Artemis ATP
An ultra-low-power Artemis board that breaks out nearly every module signal in a Mega-compatible footprint for advanced prototyping.
Processor
Ambiq Apollo3 Blue
Logic
3.3 V GPIO
Power
USB-C, VIN, Qwiic
Format
Mega-compatible ATP board
Check before wiring
- The Artemis module has no classic Arduino AREF equivalent.
- 3.3 V IO only despite the Mega-like layout.
Interfaces
GPIOI2CSPIUARTADCPWMUSBBluetooth
Source-backed connector
Interactive pin map
Pin map
Connector
Mega-compatible ATP headers
Signals grouped by function — schematic layout, not to physical scale
Dense header — open Full view for a roomier, fully-labelled diagram.
Simplified diagram, grouped by function — not to physical scale. Pin data is source-backed; verify against the linked documentation.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- All Artemis I/O uses 3.3 V logic.
- Signals marked A are ADC-capable and signals marked ~ are PWM-capable on SparkFun's silkscreen.
- The Qwiic, microphone, LEDs, JTAG, and USB-to-serial circuitry share module signals; check jumpers before repurposing them.
All 54 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| Top headers | ||||
| 1 | I2C | I2C | ||
| 2 | I2C | I2C | ||
| 3 | Ground | GND | ||
| 4 | Ground | GND | ||
| 5 | SPI | SPI | ||
| 6 | SPI | SPI | ||
| 7 | SPI | SPI | ||
| 8 | ADC | |||
| 9 | ADC | |||
| 10 | ADC | |||
| 11 | GPIO | |||
| 12 | GPIO | |||
| 13 | GPIO | |||
| 14 | GPIO | |||
| 15 | GPIO | |||
| 16 | ADC | |||
| 17 | UART | UART1 | ||
| 18 | UART | UART1 | ||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | GPIO | |||
| 22 | GPIO | |||
| 23 | GPIO | |||
| 24 | GPIO | |||
| 25 | GPIO | |||
| 26 | GPIO | |||
| Bottom headers | ||||
| 1 | Power | IOREF | ||
| 2 | System | |||
| 3 | Power | 3V3 | ||
| 4 | Power | 5V | ||
| 5 | Ground | GND | ||
| 6 | Ground | GND | ||
| 7 | Power | VIN | ||
| 8 | ADC | |||
| 9 | ADC | |||
| 10 | ADC | |||
| 11 | ADC | |||
| 12 | ADC | |||
| 13 | ADC | |||
| 14 | Ground | GND | ||
| 15 | GPIO | |||
| 16 | GPIO | |||
| 17 | GPIO | |||
| 18 | GPIO | |||
| 19 | GPIO | |||
| 20 | GPIO | |||
| 21 | GPIO | |||
| 22 | GPIO | |||
| Side breakout | ||||
| 1 | GPIO | |||
| 2 | GPIO | |||
| 3 | GPIO | |||
| 4 | GPIO | |||
| 5 | GPIO | |||
| 6 | Ground | GND | ||
Why it matters
- ATP means All The Pins: useful for exploring the Artemis module deeply.
- SparkFun hookup guide documents the pinout and advanced features.
- Good for low-power TinyML and sensor courses.
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