Features High Performance, Low Power 32-bit AVR Microcontroller Compact Single-Cycle RISC Instruction Set Including DSP Instructions Read-Modify-Write Instructions and Atomic Bit Manipulation Performance Up to 61 DMIPS Running at 48MHz from Flash (1 Flash Wait State) Up to 34 DMIPS Running at 24MHz from Flash (0 Flash Wait State) Multi-Hierarchy Bus System High-Performance Data Transfers on Separate Buses for Increased Performance 32-bit AVR 7 Peripheral DMA Channels Improve Speed for Peripheral Communication Internal High-Speed Flash Microcontroller 128Kbytes, and 64Kbytes Versions Single-Cycle Access up to 24MHz Prefetch Buffer Optimizing Instruction Execution at Maximum Speed 4ms Page Programming Time and 8ms Full-Chip Erase Time ATUC128D3 100,000 Write Cycles, 15-year Data Retention Capability Flash Security Locks and User Defined Configuration Area ATUC64D3 Internal High-Speed SRAM, Single-Cycle Access at Full Speed ATUC128D4 16Kbytes Interrupt Controller (INTC) ATUC64D4 Autovectored Low Latency Interrupt Service with Programmable Priority External Interrupt Controller (EIC) System Functions Power and Clock Manager SleepWalking Power Saving Control Internal System RC Oscillator (RCSYS) 32 KHz Oscillator Clock Failure Detection One Multipurpose Oscillator and two Phase Locked Loop (PLL) 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 Universal Serial Bus (USB) Device 2.0 full speed and low speed Flexible End-Point Configuration and Management On-chip Transceivers Including Pull-Ups Three 16-bit Timer/Counter (TC) Channels External Clock Inputs, PWM, Capture and Various Counting Capabilities 7 PWM Channels (PWMA) 12-bit PWM up to 150MHz Source Clock Three 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 32133D11/2011UC3D 2 One Master and One Slave Two-Wire Interfaces (TWI), 400kbit/s I C-compatible One 8-channel Analog-To-Digital Converter (ADC) One Inter-IC Sound Controller (IISC) with Stereo Capabilities Autonomous Capacitive Touch Button (QTouch ) Capture Up to 25 Touch Buttons QWheel and QSlide Compatible QTouch Library Support Capacitive Touch Buttons, Sliders, and Wheels QTouch and QMatrix Acquisition Acquisition Hardware assisted QTouch One Programmable Glue Logic Controller(GLOC) for General Purpose PCB Design On-Chip Non-Intrusive Debug System Nexus Class 2+, Runtime Control aWire Single-Pin Programming and Debug Interface Muxed with Reset Pin 64-pin and 48-pin TQFP/QFN (51 and 35 GPIO Pins) Four High-Drive I/O Pins Single 3.3V Power Supply or Dual 1.8V-3.3V Power Supply 2 32133D11/2011