Description

The AT32UC3A is a complete System-On-Chip microcontroller based on the AVR32 UC RISC processor running at frequencies up to 66 MHz. AVR32 UC is a high-performance 32-bit RISC microprocessor core, designed for cost-sensitive embedded applications, with particular emphasis on low power consumption, high code density and high performance.

Features

• High Performance, Low Power 32-Bit Atmel® AVR® Microcontroller

– Compact Single-cycle RISC Instruction Set Including DSP Instruction Set

– Read-Modify-Write Instructions and Atomic Bit Manipulation

– Performing 1.49 DMIPS / MHz

Up to 91 DMIPS Running at 66 MHz from Flash (1 Wait-State)

Up to 49 DMIPS Running at 33MHz from Flash (0 Wait-State)

– Memory Protection Unit

• Multi-hierarchy Bus System

– High-Performance Data Transfers on Separate Buses for Increased Performance

– 15 Peripheral DMA Channels Improves Speed for Peripheral Communication

• Internal High-Speed Flash

– 512K Bytes, 256K Bytes, 128K Bytes Versions

– Single Cycle Access up to 33 MHz

– Prefetch Buffer Optimizing Instruction Execution at Maximum Speed

– 4ms Page Programming Time and 8ms Full-Chip Erase Time

– 100,000 Write Cycles, 15-year Data Retention Capability

– Flash Security Locks and User Defined Configuration Area

• Internal High-Speed SRAM, Single-Cycle Access at Full Speed

– 64K Bytes (512KB and 256KB Flash), 32K Bytes (128KB Flash)

• External Memory Interface on AT32UC3A0 Derivatives

– SDRAM / SRAM Compatible Memory Bus (16-bit Data and 24-bit Address Buses)

• Interrupt Controller

– Autovectored Low Latency Interrupt Service with Programmable Priority

• System Functions

– Power and Clock Manager Including Internal RC Clock and One 32KHz Oscillator

– Two Multipurpose Oscillators and Two Phase-Lock-Loop (PLL) allowing Independant CPU Frequency from USB Frequency

– Watchdog Timer, Real-Time Clock Timer

• Universal Serial Bus (USB)

– Device 2.0 Full Speed and On-The-Go (OTG) Low Speed and Full Speed

– Flexible End-Point Configuration and Management with Dedicated DMA Channels

– On-chip Transceivers Including Pull-Ups

• Ethernet MAC 10/100 Mbps interface

– 802.3 Ethernet Media Access Controller

– Supports Media Independent Interface (MII) and Reduced MII (RMII)

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