Seeed XIAO nRF52840 BLE

Blecon Modem for Prototyping

The Seeed XIAO nRF52840 BLE is a small nRF52840 module breakout with a built-in USB-C connector.

Blecon Modem Breakout

Pinout

Seeed Blecon Modem Breakout Pinout

Pin Label	Name	Function
GND	GND	Ground
5V	5V	5V Power supply
3V3	3V3	3V3 Power rail
D0	nRESET	Reset pin
D7	RX	UART RX
D6	TX	UART TX
D5	CTS	UART Clear to Send
D4	RTS	UART Ready to Send
NFC	NFC1	NFC antenna connection
NFC	NFC2	NFC antenna connection