AVR MCU Enhanced with USB and Code Protection at Embedded World

Microchip has recently introduced a new AVR microcontroller series that boasts 12Mbit/s USB 2.0 connectivity along with advanced code protection features. This latest offering represents the next evolution of Microchip's 8-bit MCUs, aiming to cater to the growing demand for secure and high-speed USB solutions in embedded systems.

The company highlighted the significance of the AVR DU family, stating that it is specifically engineered to deliver enhanced security measures. One of the key aspects of the protection mechanism is the permanent disabling of write capability within the programming and debug interface post initial programming. Additionally, the microcontrollers employ an internal secure bootloader to facilitate authorized in-field code updates via the USB interface, ensuring the integrity of the system.

One notable feature of the AVR DU series is the on-board USB clock recovery, which eliminates the need for an external crystal, simplifying the design and reducing component count. Operating at speeds of up to 24MHz, the microcontrollers offer a balance of performance and power efficiency, making them suitable for a wide range of applications.

Microchip also revealed that the new ICs support power delivery of up to 15W through the USB interface, enabling USB-C charging with currents of up to 3A at 5V. This capability opens up possibilities for fast and efficient charging solutions, catering to the increasing power demands of modern devices.

To aid developers in harnessing the full potential of the AVR DU family, Microchip has provided a comprehensive set of development tools. This includes a dedicated software stack for the USB peripheral, streamlining the integration process. Additionally, the company offers the EV59F82A development board, equipped with two USB Type-C connectors—one for programming and debugging purposes, and the other linked to the IC's USB peripheral, facilitating seamless connectivity.