The Unified Program and Debug Interface (UPDI) is Microchip’s proprietary interface for programming and on-chip debugging, and has become the standard on AVR MCUs after Microchip’s purchase of Atmel.

Microchip Technology has announced its next-generation in-circuit emulator for its microcontrollers and microprocessor, including Atmel-created parts such as AVR and SAM. Called MPLAB ICE 4, it ...

AVR's 32 registers constitute the architecture's fast-access RISC register file and connect directly to the processor's ALU. The ALU supports arithmetic and logic functions between registers or ...