The nRF9151 MicroMod Processor is a compact cellular IoT module built around Nordic Semiconductor’s nRF9151 System-in-Package (SiP) and designed to work seamlessly with SparkFun’s MicroMod ecosystem. Using an M.2 E-Key connector, the 22 × 22 mm board plugs directly into compatible MicroMod carrier boards, making it easy to add cellular and positioning capabilities without complex wiring or soldering. This modular approach allows developers to mix and match processor boards with different carriers, simplifying hardware design and speeding up prototyping.
In terms of connectivity, the nRF9151 MicroMod Processor supports a wide range of modern wireless technologies, including LTE-M, NB-IoT, NB-NTN (satellite IoT), and DECT-NR+, along with GNSS for accurate location tracking. A Nano SIM card holder is provided for cellular access, and 64 Mbit external NOR flash memory enables reliable over-the-air (OTA) firmware updates, which are essential for devices deployed in the field. To improve hardware flexibility, the board also includes a 16-bit open-drain GPIO expander, allowing access to nearly all MicroMod pins despite the compact form factor.
For development and debugging, the nRF9151 MicroMod Processor is commonly paired with the MicroMod Dev Carrier board, which provides a smooth development experience. The carrier features an STM32 microcontroller acting as a debug adapter with CMSIS-DAP support, enabling easy flashing and debugging through the SWD interface. Additional features such as a USB-to-UART converter, dual-port USB hub, Qwiic connector, and RGB LED make testing, monitoring, and expansion straightforward. Together, the processor and dev carrier form a powerful yet approachable platform for building real-world IoT applications such as asset tracking, remote monitoring, smart agriculture, and industrial sensing.
