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Board overview
SparkFun Pro Micro RP2040
SparkFun · Pro Micro
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Showing 24 of 24 pins
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
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Mapped source · SparkFun Pro Micro RP2040 hookup guideOfficial- RP2040 at 133 MHz; pin labels from the SparkFun Pro Micro RP2040 hookup guide (DEV-18288).
- GPIO is 3.3 V only and not 5 V tolerant.
- RAW accepts unregulated 5 V via an onboard regulator.
- GP17 is also the CS for the onboard SPI flash; reassign carefully.
All 24 pins
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | UART | UART0 | UART0 TX | |
| 3 | UART | UART0 | UART0 RX | |
| 5 | Ground | GND | ||
| 7 | Ground | GND | ||
| 9 | I2C | I2C1 | I2C1 SDA | |
| 11 | I2C | I2C1 | I2C1 SCL | |
| 13 | GPIO | |||
| 15 | GPIO | |||
| 17 | GPIO | |||
| 19 | GPIO | |||
| 21 | GPIO | |||
| 23 | GPIO | |||
| 2 | Power | RAW | Unregulated 5 V input. | |
| 4 | Ground | GND | ||
| 6 | System | |||
| 8 | Power | VCC | 3.3 V regulated output. | |
| 10 | ADC | |||
| 12 | ADC | |||
| 14 | ADC | |||
| 16 | ADC | |||
| 18 | SPI | SPI0 | SPI0 SCK | |
| 20 | SPI | SPI0 | SPI0 TX | |
| 22 | SPI | SPI0 | SPI0 RX | |
| 24 | SPI | SPI0 | SPI0 CS · Also CS for onboard flash; reassign carefully. |