“As the next generation of Microchip 8-bit MCUs to integrate USB connectivity, the AVR DU family is designed to provide enhanced security features,” said the company.
Protection comes from permanently disabling write capability within the programming and debug interface after initial programming, and handing over update to an internal secure bootloader which can bring in authorised in-field code updates over the USB interface.
On-board USB clock recovery removes the need for an external crystal.
The cores work up to 24MHz and the parts announced at Embedded World today were:
- AVR64DU28 64kbyte flash 28pins 4x4mm VQFN, SPDIP and SSOP
- AVR64DU32 64kbyte flash 32pins 5x5mm VQFN and 7x7mm TQFP
According to Microchip, the ICs also “support power delivery of up to 15W from the USB interface [enabling] USB-C charging with currents up to 3A at 5V.”
As there is no power stage on the silicon, and the data sheet is not helping, Electronics Weekly has asked for clarification on this 15W capability.
Associated development tools include a software stack for the USB peripheral, and there is EV59F82A (left), a development board for AVR64DU32 with two USB Type-C connectors, one for programming and debugging, and one connected to the IC’s USB peripheral.
Operation is over 40°C to +85°C
Find Microchip at Embedded World 2024 in hall 3A on stand 135.
