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Microcontroller
Arduino Nano Matter
Nano-format Matter, Thread, Zigbee, and Bluetooth LE board built on a Silicon Labs MGM240S module.
- GPIO
- I2C
- SPI
- UART
- ADC
- DAC
- PWM
- USB
- Bluetooth
- Zigbee
- Thread
- Processor
- Silicon Labs MGM240S (EFR32MG24)
- Logic
- 3.3 V GPIOTreat as not 5 V tolerant
- Power
- USB-C 5 V, 6-21 V on VIN, or 3.3 V pin
- Format
- Nano module (18 x 45 mm), castellated
Before you wire
7 cautions- D0 is Serial1 TX and D1 is Serial1 RX, the reverse of the classic Nano. Re-check wiring copied from an older Nano design.
- 3.3 V GPIO; the 5 V pin is a supply rail, not a logic level.
- PWM is available on every digital pin, but at most five channels can run simultaneously.
- AREF is not connected until its solder jumper is closed, and it is shared with the user button.
- JP1 pin 13 is NC on this board.
- Powering through the 3V3 pin (after cutting the LED jumper) does not power the USB bridge.
- SWD is available only on test pads, not on the headers.
Pin map
Connector
Arduino Nano dual 15-pin headers
USB at top, component side up, headers on both long edges
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
Pin
Hover, tap, or arrow to a pad to inspect it.
- USB-C at the top. Pin order from the ABX00112 full-pinout figure; MCU ports from the Silicon Labs Arduino core variant and the Zephyr connector map.
- D0 is TX and D1 is RX (Serial1), the reverse of a classic Nano. The pad at the bottom-right corner is D0 / TX1.
- Every digital pin is PWM-capable, but at most five PWM channels can run at once.
All 30 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | SPI | SPI | PB4 | |
| 2 | Power | 3V3 | Low-power input point after cutting the LED jumper; does not power the USB bridge. | |
| 3 | Alt | Not connected until the AREF solder jumper is closed; shared with the user button. | ||
| 4 | ADC | D14 / PB0 | ||
| 5 | ADC | D15 / PB2 | ||
| 6 | ADC | D16 / PB5 | ||
| 7 | ADC | D17 / PC0 | ||
| 8 | I2C | I2C | D18 / PA6 | |
| 9 | I2C | I2C | D19 / PA7 | |
| 10 | ADC | D20 / PB1 | ||
| 11 | ADC | D21 / PB3 | ||
| 12 | Power | 5V | Outputs 5 V only when the board is USB powered. | |
| 13 | Reserved | |||
| 14 | Ground | GND | ||
| 15 | Power | VIN | 6-21 V input. | |
| 16 | SPI | SPI | PA8 / MISO | |
| 17 | SPI | SPI | PA9 / MOSI | |
| 18 | SPI | SPI | PD5 / SS | |
| 19 | GPIO | PD4 | ||
| 20 | GPIO | PD3 | ||
| 21 | GPIO | PD2 | ||
| 22 | GPIO | PC9 | ||
| 23 | I2C | I2C1 | PC8 | |
| 24 | I2C | I2C1 | PC7 | |
| 25 | SPI | SPI | PC6 | |
| 26 | SPI | SPI1 | PA3 | |
| 27 | Ground | GND | ||
| 28 | System | |||
| 29 | UART | UART1 | PA5 / MISO1 | |
| 30 | UART | UART1 | PA4 / MOSI1 |
Revision notes
- USB-C at the top. Pin order from the ABX00112 full-pinout figure; MCU ports from the Silicon Labs Arduino core variant and the Zephyr connector map.
Source references
Why it matters
- 78 MHz Cortex-M33 with 1536 kB flash, 256 kB RAM, and Secure Vault.
- Two UART, I2C, and SPI buses, a 12-bit ADC, and four DAC outputs on A0, A1, A6, and A7.
- ABX00112 is castellated; ABX00137 is the same board with headers fitted.
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