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) (Continue ...)
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