The AT32UC3L Series are complete System-On-Chip microcontrollers based on the AVR32 UC RISC processor running at frequencies up to 50MHz. 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 AVR®32 UC 32-bit Microcontroller
– Compact Single-Cycle RISC Instruction Set Including DSP Instructions
– Read-Modify-Write Instructions and Atomic Bit Manipulation
– Performance
• Up to 64 DMIPS Running at 50MHz from Flash (1 Flash Wait State)
• Up to 36 DMIPS Running at 25MHz from Flash (0 Flash Wait State)
– Memory Protection Unit
• picoPower™ Technology for Ultra-Low Power Consumption
• Multi-Hierarchy Bus System
– High-Performance Data Transfers on Separate Buses for Increased Performance
– 12 Peripheral DMA Channels Improve Speed for Peripheral Communication
• Internal High-Speed Flash
– 64Kbytes, 32Kbytes, and 16Kbytes Versions
– Single-Cycle Access up to 25MHz
– FlashVault™ Technology Allows Pre-programmed Secure Library Support for End User Applications
– 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
– 16Kbytes (64Kbytes and 32Kbytes Flash), or 8Kbytes (16Kbytes Flash)
• Interrupt Controller (INTC)
– Autovectored Low Latency Interrupt Service with Programmable Priority
• External Interrupt Controller (EIC)
• Peripheral Event System for Direct Peripheral to Peripheral Communication
• System Functions
– Power and Clock Manager
– SleepWalking™ Power Saving Control
– Internal System RC Oscillator (RCSYS)
– 32KHz Oscillator
– Multipurpose Oscillator and Digital Frequency Locked Loop (DFLL)
• Windowed Watchdog Timer (WDT)
• Asynchronous Timer (AST) with Real-Time Clock Capability
– Counter or Calendar Mode Supported
• Frequency Meter (FREQM) for Accurate Measuring of Clock Frequency
• Six 16-bit Timer/Counter (TC) Channels
– External Clock Inputs, PWM, Capture and Various Counting Capabilities
• PWM Channels on All I/O Pins (PWMA)
– 8-bit PWM up to 150MHz Source Clock
• Four Universal Synchronous/Asynchronous Receiver/Transmitters (USART)
– Independent Baudrate Generator, Support for SPI
– Support for Hardware Handshaking
• One Master/Slave Serial Peripheral Interfaces (SPI) with Chip Select Signals
– Up to 15 SPI Slaves can be Addressed
• Two Master and Two Slave Two-Wire Interfaces (TWI), 400kbit/s I2C-compatible
• One 9-channel Analog-To-Digital Converter (ADC) with up to 12 Bits Resolution
– Internal Temperature Sensor
• Eight Analog Comparators (AC) with Optional Window Detection
• Capacitive Touch (CAT) Module
– Support QTouch™ and QMatrix™ Capture from Capacitive Touch Sensors
• On-Chip Non-Intrusive Debug System
– Nexus Class 2+, Runtime Control, Non-Intrusive Data and Program Trace
– aWire™ Single-Pin Programming Trace and Debug Interface Muxed with Reset Pin
– NanoTrace™ Provides Trace Capabilities through JTAG or aWire Interface
• 48-pin TQFP/QFN/TLLGA (36 GPIO Pins)
• Five High-Drive I/O Pins
• Single 1.62-3.6V Power Supply