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The Atmel AVR instruction set is the machine language for the Atmel AVR, a modified Harvard architecture 8-bit RISC single chip microcontroller which was developed by Atmel in 1996. The AVR was one of the first microcontroller families to use on-chip flash memory for program storage.
The Atmel ICE is the currently supported inexpensive tool to program and debug all AVR devices (unlike the AVRISP/AVRISP mkII, Dragon, etc. discussed below). It connects to and receives power from a PC via USB, and supports JTAG , PDI , aWire , debugWIRE , SPI , SWD , TPI , and UPDI (the Microchip Unified Program and Debug Interface) interfaces.
ATmega328 is commonly used in many projects and autonomous systems where a simple, low-powered, low-cost micro-controller is needed. Perhaps the most common implementation of this chip is on the popular Arduino development platform, namely the Arduino Uno, Arduino Pro Mini [4] and Arduino Nano models.
If the base register is also 0, the branch is not taken regardless of the value of the displacement register or displacement address. NOPR: 2 0x0700 or 0x070n or 0x07n0 where "n" is any 4-bit value. SuperH: NOP: 2 0x0009 MIPS: NOP: 4 0x00000000 Stands for sll r0,r0,0, meaning: Logically shift register 0 zero bits to the left and store the ...
The Auxiliary Carry flag is set (to 1) if during an "add" operation there is a carry from the low nibble (lowest four bits) to the high nibble (upper four bits), or a borrow from the high nibble to the low nibble, in the low-order 8-bit portion, during a subtraction. Otherwise, if no such carry or borrow occurs, the flag is cleared or "reset ...
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The Harvard architecture is a computer architecture with separate storage [1] and signal pathways for instructions and data. It is often contrasted with the von Neumann architecture, where program instructions and data share the same memory and pathways. This architecture is often used in real-time processing or low-power applications. [2] [3]