CC Blog Datasheet Directories

32-Bit Microcontrollers

Written by Sam Wallace

Chips That Won’t Stop Evolving

The options in 32-bit microcontroller (MCU) designs available to the embedded systems developer continue to expand and evolve at a rapid clip. These crucial workhorse chips are delivering more power efficiency, durability, security, and cost-efficiency, year over year.

  • What’s happening in 32-bit microcontrollers?
  • Analog Devices’ MAX32672
  • Infineon Technologies’ XMC7000
  • Microchip Technology PIC32CXMT
  • NXP Semiconductors’ LPC550x/S0x
  • Renesas RA4E2 & RA6E2
  • Silicon Labs EFM32PG23 Gecko family of MCUs
  • STMicroelectronics STM32C0
  • Texas Instruments’ TMS320F28003x
  • WinChipHead H32V003

The 32-bit microcontroller (MCU), that workhorse of embedded systems, has experienced continuous and steady innovation and growth in its capabilities for decades by taking advantage of the latest in semiconductor technology integration. Of course, a singular “it” doesn’t do the variety of 32-bit offerings on the market today any justice.

Here, in this month’s Datasheet gallery, you will find devices designed for applications ranging from residential smart meters to rugged, industrial environments. Between those poles, we have chips designed for general-purpose applications, affordability, developer accessibility, IP and data security, power efficiency, and, of course, diminutive size requirements.

If there’s a common thread, it’s the various incarnations of Arm Cortex processors to be found in these chips. Almost every product featured this month sports a 32-bit Arm Cortex CPU, whether an M0+, M4, M7, or M33. There are a couple of exceptions to this rule, notably from tech giant Texas Instruments. But the domination of Arm cores has become a predictable pattern in our annual 32-bit MCU Datasheet coverage over the last few years; the industry is evidently smitten with them, for the time being.

All of the products featured in this month’s gallery were released since our last article covering these devices. As always, bear in mind that this collection represents only a small sample of the overabundance of 32-bit MCU available today. Even within individual companies, it was difficult to choose which of the many new 32-bit MCUs should be given the spotlight. My aim in their selection was to attempt to give a glimpse of the sheer breadth of functions that new 32-bit MCUs are serving.

PUBLISHED IN CIRCUIT CELLAR MAGAZINE • APRIL 2023 #393 – Get a PDF of the issue


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Editor-in-Chief at KCK Media Corp.

Sam Wallace - became Circuit Cellar's  Editor-In-Chief in August 2022.
His experience in writing, editing, and teaching will provide a great perspective on the selection, presentation, and clarity of editorial content. The Circuit Cellar audience will benefit from his strong academic background encompassing a Master of Fine Arts in Writing and a Bachelor of Science in Mathematics with honors. His passion for learning and teaching is a great fit for Circuit Cellar's continuing mission of Inspiring the Evolution of Embedded Design.

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32-Bit Microcontrollers

by Sam Wallace time to read: 2 min