ATXMEGA32A4U-AU 8/16-bit Atmel XMEGA A4U Microcontroller digital integrated circuits

ATXMEGA32A4U-AU 8/16-bit Atmel XMEGA A4U Microcontroller digital integrated circuits

Features

• 8/16-bit high performance AVR RISC Architecture – 142 instructions

– Hardware multiplier

• 32x8-bit registers directly connected to the ALU

• Stack in SRAM

• Stack Pointer accessible in I/O memory space

• Direct addressing of up to 16Mbytes of program and 16Mbytes of data memory

• True 16/24-bit access to 16/24-bit I/O registers

• Support for 8-, 16- and 32-bit Arithmeti

• Configuration Change Protection of system critical features

ALU - Arithmetic Logic Unit

The Arithmetic Logic Unit (ALU) supports arithmetic and logic operations between registers or between a constant and a register. Single register operations can also be executed. The ALU operates in direct connection with all the 32 general purpose registers. In a single clock cycle, arithmetic operations between general purpose registers or between a register and an immediate are executed and the result is stored back in the Register File. After an arithmetic or logic operation, the Status Register is updated to reflect information about the result of the operation.

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