AT32 vs GD32 vs HC32 vs CH32: A Buyer's Comparison of China's Main Cortex-M Brands

For a buyer building a China-based Cortex-M sourcing strategy, the conversation is no longer "STM32 or nothing". Four domestic vendors - Artery, GigaDevice, HDSC and WCH - now cover most of what designers previously bought from European and Japanese suppliers. Knowing where each one is strong is the difference between a smart substitution and a false economy.

The four vendors at a glance

How to choose among them

• Start from the peripheral you cannot compromise on. Need integrated Bluetooth LE? Wireless families such as the AT32WB415 remove an external radio. Need deep low-power? The AT32L021 sits in that slot.
• Check toolchain maturity. All four support the mainstream compilers, but example quality and library completeness vary. Validate on the bench before committing volume.
• Compare availability on the same day. Lead times move independently. A part that is scarce from one vendor may be plentiful from another in the same week.
• Qualify, do not assume. Same core does not mean same behaviour. Flash timing, ADC and USB clocking differ and must be re-tested.

Where Artery fits

Artery's F4 family - from the AT32F423 up to the AT32F435 - is the most common choice when a team wants a mainstream Cortex-M4 with a clean upgrade path from older devices. We stock the range and can quote Artery, and the alternative brands, side by side so you can make the call on real availability and price.

We are an independent distributor, not an authorised representative of any of these manufacturers; part names are used to help you identify the components discussed. Always confirm specifications against the manufacturer's datasheet before design-in.

Frequently asked questions

Which Chinese Cortex-M brands should a buyer actually consider?

The four most widely sourced China-based Cortex-M vendors are Artery (AT32), GigaDevice (GD32), HDSC / Huada Semiconductor (HC32) and WCH (CH32). Each has a different sweet spot: Artery and GigaDevice cover the broadest mainstream portfolios, HC32 is strong in automotive and industrial, and WCH pairs Cortex-M with native USB and Bluetooth LE.

Is one of them 'better' than the others?

There is no single winner. Artery's F4 family is a common drop-in-class choice for STM32F1/F4 replacements, GigaDevice has the largest installed base, HC32 is favoured for cost-sensitive and automotive designs, and WCH is compelling where integrated USB or wireless saves a second chip. The right answer depends on your peripheral needs, toolchain and volume.

Do these parts share toolchains and middleware?

Most of them are supported by Keil, IAR and GCC, and each vendor ships its own SPL or HAL plus example projects. Code is portable at the register and CMSIS level, but you should still budget validation time for peripheral libraries and clock configuration rather than assuming identical behaviour.

Can I mix brands in one bill of materials?

You can, but treat each as a separate qualification. Different vendors have different package conventions, datasheet styles and long-term roadmap signals. We stock multiple brands so you can compare availability and price on the same enquiry.

About us & trademarks: JTDZ Tech (Shenzhen Jingteng Electronics Technology Co., Ltd.) is an independent distributor of electronic components. We are not an authorised distributor or representative of the manufacturers named in this article. Manufacturer and part names are used for indicative purposes only, to help identify the components discussed; all trademarks remain the property of their respective owners. Always verify specifications against the manufacturer's datasheet before design-in or purchase.