Atmel AVR was one of the first microcontroller families to use on-chip flash memory for program storage, as opposed to one-time programmable ROM, EPROM, or EEPROM used by other microcontrollers at the time.
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17 Facts About Atmel AVR
2.
Atmel AVR architecture was conceived by two students at the Norwegian Institute of Technology, Alf-Egil Bogen and Vegard Wollan.
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3.
Atmel says that the name AVR is not an acronym and does not stand for anything in particular.
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4.
The creators of the Atmel AVR give no definitive answer as to what the term "Atmel AVR" stands for.
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5.
Original Atmel AVR MCU was developed at a local ASIC house in Trondheim, Norway, called Nordic VLSI at the time, now Nordic Semiconductor, where Bogen and Wollan were working as students.
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The designers worked closely with compiler writers at IAR Systems to ensure that the Atmel AVR instruction set provided efficient compilation of high-level languages.
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7.
Atmel AVR is a modified Harvard architecture machine, where program and data are stored in separate physical memory systems that appear in different address spaces, but having the ability to read data items from program memory using special instructions.
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8.
Almost all Atmel AVR microcontrollers have internal EEPROM for semi-permanent data storage.
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9.
Atmel AVR processors were designed with the efficient execution of compiled C code in mind and have several built-in pointers for the task.
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10.
Atmel AVR instruction set is more orthogonal than those of most eight-bit microcontrollers, in particular the 8051 clones and PIC microcontrollers with which Atmel AVR competes today.
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11.
Atmel AVR solicited input from major developers of compilers for small microcontrollers, to determine the instruction set features that were most useful in a compiler for high-level languages.
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12.
Atmel AVR has application notes and code pertaining to many bus interfaces.
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13.
Atmel AVR offers several options for debugging, mostly involving on-chip debugging while the chip is in the target system.
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15.
Atmel AVR Butterfly comes preloaded with software to demonstrate the capabilities of the microcontroller.
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16.
The Atmel AVR Butterfly has a piezoelectric transducer that can be used to reproduce sounds and music.
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17.
Atmel AVR has recently launched a new publication "Atmel AVR Automotive Compilation" to help developers with automotive applications.
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