# cortex m4

Published articles for cortex m4.

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## Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY

DevFeed: [Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY](<https://devfeed.tech/articles/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy-14022.md>)

Original publisher: [Read original article](<https://www.cnx-software.com/2026/09/03/artery-at32f406-and-at32f408-cortex-m4f-mcus-feature-optional-high-speed-usb-otg-phy/>)

Author: Debashis Das

Published: 2026-09-03T09:40:39Z

Content type: news

Language: en

Sources: [CNX Software - Embedded Systems News](<https://devfeed.tech/sources/cnx-software-embedded-systems-news.md>)

Topics: [Microcontroller](<https://devfeed.tech/topics/microcontroller.md>), [Embedded Systems](<https://devfeed.tech/topics/embedded-systems.md>), [Arm](<https://devfeed.tech/topics/arm.md>), [USB](<https://devfeed.tech/topics/usb.md>), [Internet of things](<https://devfeed.tech/topics/iot.md>), [cpu](<https://devfeed.tech/topics/cpu.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>)

Tags: [arm](<https://devfeed.tech/tags/arm.md>), [boot](<https://devfeed.tech/tags/boot.md>), [bootloader](<https://devfeed.tech/tags/bootloader.md>), [c-c-plus-plus](<https://devfeed.tech/tags/c-c-plus-plus.md>), [cortex-m4](<https://devfeed.tech/tags/cortex-m4.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [development-board](<https://devfeed.tech/tags/development-board.md>), [embedded](<https://devfeed.tech/tags/embedded.md>), [embedded-systems](<https://devfeed.tech/tags/embedded-systems.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [industrial](<https://devfeed.tech/tags/industrial.md>), [iot](<https://devfeed.tech/tags/iot.md>), [mcu](<https://devfeed.tech/tags/mcu.md>), [microcontrollers](<https://devfeed.tech/tags/microcontrollers.md>), [processors](<https://devfeed.tech/tags/processors.md>), [specifications](<https://devfeed.tech/tags/specifications.md>), [usb](<https://devfeed.tech/tags/usb.md>)

### AI overview

The article describes Artery Technology's AT32F406 and AT32F408 Arm Cortex-M4F microcontrollers, which run at up to 216 MHz. The AT32F408 adds USB 2.0 OTG High-Speed support with an integrated PHY, while both devices provide DSP and floating-point capabilities, configurable memory options, QSPI, and a range of digital and analog peripherals.

### Source excerpt

Artery Technology AT32F406 and AT32F408 are two new Arm Cortex-M4F MCUs running at up to 216 MHz, with the F408 adding USB OTG High-Speed and an integrated PHY for industrial automation, IoT, USB accessories, and gaming peripherals. The AT32F406/F408 series both offer DSP instructions and a floating-point unit (FPU), integrate up to 512 KB Flash and 192 KB SRAM, and a 4 KB OTP memory for critical data and parameters. The microcontrollers also offer a QSPI interface for external Flash or RAM expansion, and a range of digital and analog peripheral interfaces. Artery AT32F406/AT32F408 specifications: MCU - 32-bit Arm Cortex-M4F CPU up to 216 MHz; also features Memory Protection Unit (MPU) and DSP instructions Memory/Storage 128 KB to 192 KB SRAM 256 KB to 512 KB Flash memory 26 KB boot memory (configurable as a bootloader or general instruction/data memory) 4 KB OTP (one-time programmable) memory QSPI interface for external SPI [...] The post Artery AT32F406 and AT32F408 Cortex-M4F MCUs feature optional high-speed USB OTG PHY appeared first on CNX Software - Embedded Systems News.