Meet XIAO nRF54LM20A (Sense): Motion Wake-Up. Always Connected. Built for Ultra-Low Power
Built around Nordic Semiconductor’s new nRF54LM20A platform and paired with the nPM1300 PMIC, this new XIAO series delivers ultra-low power, high performance, expanded IO, and richer integration.
Seeed Studio XIAO family has always been shaped by how the community actually uses it. Following the debut of XIAO nRF54L15 and XIAO nRF54L15 Sense, developers are now looking for lower power consumption that holds up in real deployments, more GPIOs for system-level integration, and more seamless wireless design, including antenna switching and NFC in compact layouts. At the same time, applications are becoming more sophisticated, requiring greater memory capacity and processing headroom.
Today, we’re excited to introduce Seeed Studio XIAO nRF54LM20A and XIAO nRF54LM20A Sense. Built around Nordic Semiconductor’s new nRF54LM20A platform and paired with the nPM1300 PMIC, this new XIAO series delivers ultra-low power, high performance, expanded IO, and richer integration — all within the signature XIAO footprint.
Both boards are now available for pre-order via our official Bazaar Webstore and AliExpress Store, with early bird pricing starting from USD $8.90 and USD $14.90 respectively.
Key Features at a Glance
- Power-Optimized Architecture: Nordic’s nRF54LM20A SoC with nPM1300 PMIC, aligned with Nordic’s reference EVB design in XIAO Form Factor
- Large Memory Capacity: 2036 KB NVM + 512 KB RAM, with an additional 8 MB external memory
- Multiple Connectivity: BLE 6.0, Matter, Thread, Zigbee, and proprietary 2.4 GHz (up to 4 Mbps) with efficient multi-protocol operation
- Thumb Size with Rich Peripherals: 28 GPIOs, USB Type-C, onboard battery charging, and SMD-friendly design for production integration
- Extra Sensors on the Sense version: Built-in digital microphone and 6-axis IMU with motion-triggered wake-up for ultra-low power applications
- Low-Power RGB LED Design: Diode RGB LEDs directly controlled by GPIOs for zero standby power consumption
- Optimized Antenna & NFC System: Improved RF routing and practical onboard NFC integration
Bringing EVB-Level Performance into the XIAO Form Factor
Low power in real applications is not defined by the MCU alone. With XIAO nRF54LM20A (Sense), we‘ve worked closely with Nordic Semiconductor and aligned with their official EVB reference design, integrating the npm1300 PMIC with its recommended configuration. This is important because the official EVB design represents a validated, optimized baseline for how the nRF54LM20A should perform, and now you can have performance and power behavior that are much closer to Nordic’s EVB in a thumb-sized XIAO.
The integration of npm1300 also enables features such as shiphold mode, allowing the system to enter a true near-zero power state during storage or transport, preventing unintended battery drain before deployment.
Eliminating Hidden Power Costs
Even small hardware decisions can have a measurable impact. With XIAO nRF54LM20A (Sense), we use R/G/B LEDs instead of addressable LEDs, eliminating standby current from LED drivers entirely. Unlike typical addressable LEDs that require continuous power to maintain state, this design ensures zero power draw when LEDs are off, while still providing full control through GPIOs.
In our internal testing using Nordic’s Power Profiler Kit II (PPK2), the board achieved a System OFF current as low as 4.93 μA when powered by a 3.7 V Li-ion battery. (We’ll be sharing more behind-the-scenes stories and low-power design details of the XIAO nRF54LM20A in a future technical blog—stay tuned!)
On the Sense version, the onboard 6-axis IMU is connected to a wake-up capable pin, allowing the device to remain in deep sleep and wake instantly on motion. This has a direct impact especially on wearables, motion-triggered edge devices, and always-on sensing scenarios.
More IO, More Integration
The XIAO nRF54LM20A (Sense) adopts the Plus form factor, expanding to 28 GPIOs while remaining compact, giving developers more flexibility when building complete systems. It is also designed with SMD integration in mind, making it easier to move from development to production.
Beyond IO, the board integrates essential system components directly onboard, including USB Type-C, battery charging circuitry, Reset and User buttons, and an IPEX antenna connector for flexible RF deployment. NFC has also been further optimized for onboard use, making features like tap-to-connect and device provisioning more practical in compact designs. Together, these improvements reduce the need for external components and simplify hardware design.
(Hardware Overview of XIAO nRF54LM20A Senes)
XIAO nRF54LM20A (Sense) VS XIAO nRF54L15 (Sense) VS XIAO nRF52840 (Sense)
| Product Name | XIAO nRF54LM20A | XIAO nRF54LM20A Sense | XIAO nRF54L15 | XIAO nRF52840 |
|---|---|---|---|---|
| Processor | Arm® Cortex®-M33, 128 MHz RISC-V,128 MHz (Coprocessor) | Arm® Cortex®-M33, 128 MHz RISC-V,128 MHz (Coprocessor) | Arm® Cortex®-M33, 128 MHz RISC-V,128 MHz （Coprocessor） | ARM®Cortex®-M4 32-bit processor with FPU, 64 MHz |
| Software Compatibility | Nordic nRF Connect SDK，PlatformIO, Zephyr | Nordic nRF Connect SDK，PlatformIO, Zephyr | Nordic nRF Connect SDK，PlatformIO (Zephyr) | Arduino IDE, PlatformIO, MicroPython, CircuitPython, Zephyr |
| Wireless Connecticity | Bluetooth LE 6.0 (include Channel Sounding), Bluetooth Mesh, NFC, Thread, Zigbee, Matter, Amazon Sidewalk, Proprietary 2.4 GHz protocols | Bluetooth LE 6.0 (include Channel Sounding), Bluetooth Mesh, NFC, Thread, Zigbee, Matter, Amazon Sidewalk, Proprietary 2.4 GHz protocols | Bluetooth LE 6.0, Bluetooth Mesh, Zigbee, Thread, Matter, Amazon Sidewalk, and proprietary 2.4 GHz protocols. | Bluetooth LE 5.4, NFC, Zigbee, proprietary 2.4 GHz protocols |
| Interface | GPIO（PWM）Pin x28 Digital Pin x28 Analog Pin x8 I2C x2 UART x1 SPI x2 | GPIO (PWM) Pin x26 Digital Pin x26 Analog Pin x8 I2C x1 UART x1 SPI x2 | GPIO（PWM）Pin x16（Sense version is14） Digital Pin x16 Analog Pin x6 I2C x2 UART x1 SPI x2 | GPIO（PWM）Pin x11 Digital Pin x11 Analog Pin x6 I2C x1 UART x1 SPI x1 |
| Onboard | User R/G/B LED x1 Charge LED (Red) x1 Reset Button x1 User Button x1 1x IPEX Connector (for external antenna) | User R/G/B LED x1 Charge LED x1 Reset Button x1 User Button x1 1x IPEX Connector (for external antenna) 6-Axis IMU x1 Mic x1 | User LED x1 Charge LED x1 Reset Button x1 User Button x1 Onboard Ceramic Antenna x1 U.FL Connector (for external antenna) x1 | User LED x1 Charge LED x1 Reset Button x1 BlueTooth Antenna x1 |
| Price | $9.90 (early bird $8.90) | $15.90 (early bird $14.90) | $9.9 | $9.9 |
Where to Get Started
The XIAO nRF54LM20A and XIAO nRF54LM20A Sense (with both the standard variants and pre-soldered variants) are now live for pre-order at USD $8.90 and USD $14.90 respectively via our official Webstore Bazaar and AliExpress Store, with shipping starting from 15, July, 2026.
To help you get started quickly, we’ve prepared a comprehensive set of technical resources, including hardware documentation, getting-started guides and development tutorials. Explore the wiki to begin building with XIAO nRF54LM20A (Sense) today.
End Note
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