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Atmel Electronic Components Datasheet

AVR32AP Datasheet

32-bit AVR Microcontroller

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AVR32AP pdf
Feature Summary
32-bit load/store AVR32B RISC architecture
15 general-purpose 32-bit registers
32-bit Stack Pointer, Program Counter and Link Register reside in register file
Fully orthogonal instruction set
Pipelined architecture allows one instruction per clock cycle for most instructions
Byte, half-word, word and double word memory access
Shadowed interrupt context for INT3 and multiple interrupt priority levels
Privileged and unprivileged modes enabling efficient and secure Operating Systems
Full MMU allows for operating systems with memory protection
Instruction and data caches
Innovative instruction set together with variable instruction length ensuring industry
leading code density
DSP extention with saturating arithmetic, and a wide variety of multiply instructions
SIMD extention for media applications
Dynamic branch prediction and return address stack for fast change-of-flow
Powerful On-Chip Debug system
Coprocessor interface
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32-bit AVR®
Microcontroller
AVR32 AP
Technical
Reference
Manual
32001A–AVR32–06/06


Atmel Electronic Components Datasheet

AVR32AP Datasheet

32-bit AVR Microcontroller

No Preview Available !

AVR32AP pdf
1. Introduction
AVR®32 is a new high-performance 32-bit RISC microprocessor core, designed for cost-sensi-
tive embedded applications, with particular emphasis on low power consumption and high code
density. In addition, the instruction set architecture has been tuned to allow for a variety of
microarchitectures, enabling the AVR32 to be implemented as low-, mid- or high-performance
processors.
1.1 The AVR family
The AVR family was launched by Atmel® in 1996 and has had remarkable success in the 8-and
16-bit flash microcontroller market. AVR32 complements the current AVR microcontrollers.
Through the AVR32 family, the AVR is extended into a new range of higher performance appli-
cations that is currently served by 32- and 64-bit processors
To truly exploit the power of a 32-bit architecture, the new AVR32 architecture is not binary com-
patible with earlier AVR architectures. In order to achieve high code density, the instruction
format is flexible providing both compact instructions with 16 bits length and extended 32-bit
instructions. While the instruction length is only 16 bits for most instructions, powerful 32-bit
instructions are implemented to further increase performance. Compact and extended instruc-
tions can be freely mixed in the instruction stream.
1.2 The AVR32 Microprocessor Architecture
The AVR32 is a new innovative microprocessor architecture. It is a fully synchronous synthesi-
sable RTL design with industry standard interfaces, ensuring easy integration into SoC designs
with legacy intellectual property (IP). Through a quantitative approach, a large set of industry
recognized benchmarks have been compiled and analyzed to achieve the best code density in
its class of microprocessor architectures. In addition to lowering the memory requirements, a
compact code size also contributes to the core’s low power characteristics. The processor sup-
ports byte and half-word data types without penalty in code size and performance.
Memory load and store operations are provided for byte, half-word, word and double word data
with automatic sign- or zero extension of half-word and byte data. The C-compiler is closely
linked to the architecture and is able to exploit code optimization features, both for size and
speed.
In order to reduce code size to a minimum, some instructions have multiple addressing modes.
As an example, instructions with immediates often have a compact format with a smaller imme-
diate, and an extended format with a larger immediate. In this way, the compiler is able to use
the format giving the smallest code size.
Another feature of the instruction set is that frequently used instructions, like add, have a com-
pact format with two operands as well as an extended format with three operands. The larger
format increases performance, allowing an addition and a data move in the same instruction in a
single cycle.
2 AVR32
32001A–AVR32–06/06


Part Number AVR32AP
Description 32-bit AVR Microcontroller
Maker ATMEL Corporation
Total Page 30 Pages
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