HomePress ReleasesOptimised 32-Bit MCU For Low-Powered IoT Edge Applications

Optimised 32-Bit MCU For Low-Powered IoT Edge Applications

New PG22 microcontrollers enable high-volume, low-power consuming industrial products and simplifies product development

Silicon Labs has launched the EFM32PG22 (PG22) 32-bit microcontroller unit (MCU), a low-cost, high-performance solution with an industry-leading combination of energy efficiency, performance and security. With easy-to-use, cost-efficient analogue capabilities, the PG22 MCU is ideally suited for rapid development of consumer and industrial applications with demanding size constraints and low-power operation requirements.

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“Market demand for high-volume, low-powered IoT products continues to grow at a rapid rate,” said Matt Saunders, vice president of IoT at Silicon Labs. “PG22 is an optimized 32-bit MCU, at a price point typically associated with the 8-bit MCU market, providing form factor and code compatibility with its wireless counterparts.”

PG22 offers best-in-class 32-bit MCU performance through a unique mix of product features including:
⦁ Ultra-low-power – 27 µA/MHz Active and 1.1 µA EM2 with 8k RAM retention
⦁ Arm Cortex-M33 core running at 76.8 MHz
⦁ 64k / 128k / 256k / 512k Flash options with 32k RAM
⦁ Compact package options – 5 mm x 5 mm QFN40 (26 GPIO) or 4 mm x 4 mm QFN32 (18 GPIO)
⦁ Best-in-class device security including secure boot with Root of Trust and Secure Loader (RTSL)
⦁ Wide range of peripherals such as 16-bit ADC, PDM, built-in sleep crystal and temp sensor

PG22 is pin and software-compatible with the award winning EFR32xG22 wireless SoCs (BG22, MG22 and FG22), allowing designers to leverage a scalable embedded platform to simplify product development and help drive cost efficiency. Offering 100 per cent form factor and code alignment with xG22 SoCs, developers can take advantage of application sharing and a drop-in upgrade path to Bluetooth Low Energy (LE), Zigbee or Proprietary (2.4 GHz) wireless connectivity.

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EFM32PG22 MCUs are currently available in 5 mm x 5 mm QFN40 and 4 mm x 4 mm QFN32 package options. PG22 MCUs provide cost-effective embedded processing. The PG22 development kit, a small form factor prototype and development platform is also available.


Vinay Prabhakar Minj
Vinay Prabhakar Minj
Vinay Prabhakar Minj is a technology writer and science communication specialist with a Master’s degree in Communication of Science and Innovation (Science Communication). He is a prolific contributor to Electronics For You, where he has authored over 1,000 articles covering electronics, semiconductors, embedded systems, IoT, and emerging technologies. With a strong foundation in science communication, Vinay focuses on translating complex engineering concepts into clear, accessible, and application-oriented content. His work spans topics such as sensor technologies, chip design, wireless systems, and next-generation electronics, making advanced innovations easier to understand for engineers, students, and industry professionals. Through his extensive contributions, he has built a reputation for delivering reliable, well-researched, and practical insights that help readers stay updated with the rapidly evolving electronics ecosystem. His writing bridges the gap between technical depth and real-world usability, supporting both learning and decision-making in the field.

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