Описание
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. The Peripheral Direct Memory Access controller (PDCA) enables data transfers between peripherals and memories without processor involvement. PDCA drastically reduces processing overhead when transferring continuous and large data streams between modules within the MCU. The PowerManager improves design flexibility and security: the on-chip Brown-Out Detector monitors the power supply, the CPU runs from the on-chip RC oscillator or from one of external oscillator sources, a Real-Time Clock and its associated timer keeps track of the time. The Timer/Counter includes three identical 16-bit timer/counter channels. Each channel can be independently programmed to perform frequency measurement, event counting, interval measurement, pulse generation, delay timing and pulse width modulation. The AT32UC3A also features many communication interfaces for communication intensive applications. In addition to standard serial interfaces like UART, SPI or TWI, other interfaces like flexible Synchronous Serial Controller, USB and Ethernet MAC are available. The Synchronous Serial Controller provides easy access to serial communication protocols and audio standards like I2S. The Full-Speed USB 2.0 Device interface supports several USB Classes at the same time thanks to the rich End-Point configuration. The On-The-GO (OTG) Host interface allows device like a USB Flash disk or a USB printer to be directly connected to the processor. The media-independent interface (MII) and reduced MII (RMII) 10/100 Ethernet MAC module provides on-chip solutions for network-connected devices.
- 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)
- One Three-Channel 16-bit Timer/Counter (TC)
- Three External Clock Inputs, PWM, Capture and Various Counting Capabilities
- One 7-Channel 16-bit Pulse Width Modulation Controller (PWM).
