--- title: Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature... description: Artery Technology has introduced the AT32F406 and AT32F408, two new Arm Cortex-M4F microcontrollers running up to 216 MHz with DSP instructions and an FPU. The... canonical: https://daily.dev/posts/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy-xnmutc7bu twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY | daily.dev og:description: Artery Technology has introduced the AT32F406 and AT32F408, two new Arm Cortex-M4F microcontrollers running up to 216 MHz with DSP instructions and an FPU. The... og:url: https://daily.dev/posts/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy-xnmutc7bu og:image: https://api.daily.dev/og/posts/xNMuTC7bu.png og:image:alt: Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY **[CNX Software](https://daily.dev/sources/cnx-software)** · 4 min read · 0 upvotes · 0 comments ## Summary Artery Technology has introduced the AT32F406 and AT32F408, two new Arm Cortex-M4F microcontrollers running up to 216 MHz with DSP instructions and an FPU. The AT32F408 adds a USB 2.0 OTG High-Speed controller with an integrated on-chip PHY, targeting industrial automation, IoT, USB accessories, and gaming peripherals. Both chips offer up to 512 KB Flash, 192 KB SRAM, QSPI expansion, extensive analog and timer peripherals, and are supported by Artery's AT32 IDE, VS Code extension, and BSP libraries. Evaluation boards AT-START-F406 and AT-START-F408 with Arduino-compatible headers are available, though purchasing details are not yet public. Both MCUs are currently in sampling with mass production underway. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the difference between the Artery AT32F406 and AT32F408 microcontrollers? The AT32F408 adds a USB 2.0 OTG High-Speed controller with an integrated on-chip PHY and a dedicated 4 KB buffer, a feature the AT32F406 lacks. Both are Arm Cortex-M4F MCUs running up to 216 MHz with DSP instructions and an FPU, up to 512 KB Flash, and 192 KB SRAM, but the AT32F406 tops out at 57 GPIOs versus 54 on the AT32F408. _Engineers comparing new MCU options can track hardware releases like this one on daily.dev._ ### Does the Artery AT32F408 microcontroller work as a drop-in replacement for STM32 chips? No, the AT32F406 and AT32F408 do not offer similar pin or peripheral compatibility with any STM32 SKUs. This contrasts with Artery's earlier AT32F403ACGU7, which served as a drop-in (though not direct clone) replacement for ST's STM32F103 series, as seen in a 49-cent Black Pill clone board from 2023. _Developers evaluating MCU alternatives can follow chip compatibility news on daily.dev._ ## Similar posts on daily.dev - [The 192 MHz WCH CH32V205 RISC-V MCU offers a 480 Mbps USB 2.0 interface](https://daily.dev/posts/the-192-mhz-wch-ch32v205-risc-v-mcu-offers-a-480-mbps-usb-2-0-interface-3gv9thd8u) · Adafruit Blog · 0 upvotes · 0 comments - [WCH CH32V407/467 RISC-V MCU integrates Fast Ethernet MAC \+ PHY, 480 Mbps USB 2.0 PHY, up to 8 MB on-chip PSRAM](https://daily.dev/posts/wch-ch32v407-467-risc-v-mcu-integrates-fast-ethernet-mac-phy-480-mbps-usb-2-0-phy-up-to-8-mb-on--o1t3slg6n) · CNX Software · 1 upvotes · 0 comments - [NXP MCX C15 and C16 low-cost Cortex-M23 MCUs target IoT, analog, and motor control applications](https://daily.dev/posts/nxp-mcx-c15-and-c16-low-cost-cortex-m23-mcus-target-iot-analog-and-motor-control-applications-mqetkppym) · CNX Software · 0 upvotes · 0 comments - [ART-Pi II development board features 600 MHz STM32H7R7 Cortex-M7 MCU with NeoChrom GPU](https://daily.dev/posts/art-pi-ii-development-board-features-600-mhz-stm32h7r7-cortex-m7-mcu-with-neochrom-gpu-bbvcb4pmp) · CNX Software · 0 upvotes · 0 comments --- Tags: [#embedded](https://daily.dev/tags/embedded) [View this post on daily.dev](https://daily.dev/posts/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy-xnmutc7bu) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY","url":"https://daily.dev/posts/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy-xnmutc7bu","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy-xnmutc7bu"},"datePublished":"2026-09-03T09:44:38.636Z","dateModified":"2026-09-03T10:50:27.587Z","description":"Artery Technology has introduced the AT32F406 and AT32F408, two new Arm Cortex-M4F microcontrollers running up to 216 MHz with DSP instructions and an FPU. 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