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 AT32UC3A incorporates on-chip Flash and SRAM memories for secure and fast access. For applications requiring additional memory, an external memory interface is provided on AT32UC3A0 derivatives. 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 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 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. AT32UC3A integrates a class 2+ Nexus 2.0 On-Chip Debug (OCD) System, with non-intrusive real-time trace, full-speed read/write memory access in addition to basic runtime control.
- High Performance, Low Power 32-Bit 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
- Prefect 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 64K, Single-Cycle Access at Full Speed
- (512KB Flash)
- SDRAM 64 Bytes Compatible Memory Bus (16-bit Data and 24-bit Address Buses)
- Interrupt Controller
- Auto vectored 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
