Seeed Studio XIAO nRF54LM20A and XIAO nRF54LM20A Sense are tiny USB-C IoT boards based on Nordic Semiconductor’s nRF54LM20A wireless SoC offering Bluetooth 6.0, Matter, Thread, Zigbee, NFC, Amazon Sidewalk, and 2.4 GHz proprietary connectivity.
Both variants come with on-chip 2 MB flash and 512 KB RAM, as well as an 8 MB flash, an nPM1300 PMIC for power management, up to 28 GPIOs, and an RGB LED. The Sense model adds a digital microphone and 6-axis IMU with motion-triggered wake-up for ultra-low power applications.
Wireless SoC – Nordic Semiconductor nRF54LM20A CPU Arm Cortex-M33 application processor clocked at up to 128 MHz RISC-V coprocessor running at 128 MHz Memory – 512 kB of RAM Storage – 2 MB of Non-Volatile Memory (NVM) Wireless Bluetooth LE 6.0 with PHY rates of 125 kbit/s, 500 kbit/s, 1 Mbit/s, and 2 Mbit/s Bluetooth Channel Sounding , Bluetooth LE long range (coded PHY), Bluetooth Mesh IEEE 802.15.4 supporting Thread, Zigbee, and Matter Nordic Proprietary 2.4 GHz protocol and NFC Amazon Sidewalk +10 dBm maximum radiated output power (EIRP)
CPU Arm Cortex-M33 application processor clocked at up to 128 MHz RISC-V coprocessor running at 128 MHz
Arm Cortex-M33 application processor clocked at up to 128 MHz
USB – USB Type-C port for power and programming
Sensors ( Sense model only ) 6-Axis IMU sensor (takes one I2C interface) PDM microphone (takes two GPIOs)
6-Axis IMU sensor (takes one I2C interface)