EYE on NPI: STMicroelectronics STM32C0x1 Series Entry-Level MCU #EYEonNPI #DigiKey @DigiKey @ST_World @Adafruit

This week’s EYE ON NPI (video) is your next 8-bit microcontroller, it’s STMicroelectronics STM32C0x1 Series Entry-Level MCU that gives developers a 32-bit Arm Cortex M0+ microcontroller at 8-bit microcontroller prices.

These aggressively priced microcontrollers come just at the end of a 2-year chip shortage, so if you’ve been holding back a design, it could be a great time to swap out your 8051-based or other 8-bit microcontroller for a powerful Cortex M0+ that can use ST’s supported firmware libraries and IDE.

Most developers go with 8-bit microcontrollers to get a few basic needs met: maybe a few timers, ADC, GPIO and I2C or USART for interfacing. The benefits are low complexity in design, for example no crystal needed because there’s an internal trimmed-RC oscillator, or a simple power supply with only one power pin so you don’t need multiple regulators.

8051-based microcontrollers are popular as cores for their ultra-low cost and fairly-low power usage. But the programming environment tends to be archaic, and 8-bit code compiles chunky especially when dealing with floating points or large-integer math. If you ever have to do anything more complex like interpolate values or perhaps run a digital filter on your data, an 8-bit micro will be really annoying.

Updating to the 32-bit, particularly the Arm Cortex line, will open up the whole universe of optimized and standardized libraries that CMSIS provides.

The STM32C0 series is the lower-powered version of the STM32G0 series – both are Cortex M0+ chips, but the C0 runs at 48MHz instead of the G0’s 64 MHz. The chips are otherwise pin compatible at the low pin-count-end of 8 to 48 pins, the G0 keeps going up to 100 pins.

There’s 9 different packages, that also have increasing amounts of FLASH/SRAM, with either 16 or 32K of flash and 6 or 12K of RAM.

For peripherals you’ll get plenty of GPIO, DMA, four 16-bit timers, a 12-bit ADC with 13 channels and surprisingly-high 1.7 MSPS. SPI, I2S, two USART and one I2C. Note there’s no USB on the C0 series, for that you’ll need to upgrade to the STM 32G0x1.

We haven’t featured a lot of microcontrollers on EYE ON NPI lately because we prefer to tell you about parts you can order immediately. The good news about STMicroelectronics STM32C0x1 Series is that they’re all in stock right now for immediate shipment – in a wide variety of packages and memory options.

And if you want to start verifying the parts for your firmware immediately, there’s the STM32C0116-DK dev kit in stock. Order your STM32C0x1 Series chips or developer kit today, and you can be revising your 8-bit microcontroller design to a 32-bit glow-up by tomorrow afternoon!


Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in! adafruit.com/mastodon

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



No Comments

No comments yet.

Sorry, the comment form is closed at this time.