Description

The AT32UC3A3/A4 is a complete System-On-Chip microcontroller based on the AVR32 UC RISC processor running at frequencies up to 66MHz. 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.

Specifications and features

- 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 up to 1.51DMIPS/MHz
- Up to 92DMIPS Running at 66MHz from Flash (1 Wait-State)
- Up to 54 DMIPS Running at 36MHz from Flash (0 Wait-State)
- Memory Protection Unit
- Multi-Layer Bus System
- High-Performance Data Transfers on Separate Buses for Increased Performance
- 8 Peripheral DMA Channels (PDCA) Improves Speed for Peripheral Communication
- 4 generic DMA Channels for High Bandwidth Data Paths
- Internal High-Speed Flash
- 256KBytes, 128KBytes, 64KBytes versions
- Single-Cycle Flash Access up to 36MHz
- Prefetch Buffer Optimizing Instruction Execution at Maximum Speed
- 4 ms 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
- 64KBytes Single-Cycle Access at Full Speed, Connected to CPU Local Bus
- 64KBytes (2x32KBytes with independent access) on the Multi-Layer Bus System
- 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), Watchdog Timer, Real-Time Clock Timer
- External Memories
- Support SDRAM, SRAM, NandFlash (1-bit and 4-bit ECC), Compact Flash, MultiMediaCard (MMC V4.3), Secure-Digital (SD V2.0), SDIO V1.1, CE-ATA V1.1, FastSD, SmartMedia, Compact Flash, Memory Stick: Standard Format V1.40, PRO Format V1.00, Micro, IDE Interface
- One Advanced Encryption System (AES) for AT32UC3A3256S, AT32UC3A3128S, AT32UC3A364S, AT32UC3A4256S, AT32UC3A4128S and AT32UC3A364S
- 256-, 192-, 128-bit Key Algorithm, Compliant with FIPS PUB 197 Specifications
- Universal Serial Bus (USB)
- High-Speed USB (480Mbit/s) Device/MiniHost with On-The-Go (OTG)
- Flexible End-Point Configuration and Management with Dedicated DMA Channels
- On-Chip Transceivers Including Pull-Ups
- One 8-channel 10-bit Analog-To-Digital Converter, multiplexed with Digital IOs
- Two Three-Channel 16-bit Timer/Counter (TC)
- Four Universal Synchronous/Asynchronous Receiver/Transmitters (USART)
- Fractionnal Baudrate Generator
- Support for SPI and LIN, Optionnal support for IrDA, ISO7816, Hardware Handshaking, RS485 interfaces and Modem Line
- Two Master/Slave Serial Peripheral Interfaces (SPI) with Chip Select Signals
- One Synchronous Serial Protocol Controller, Supports I2S and Generic Frame-Based Protocols
- Two Master/Slave Two-Wire Interface (TWI), 400kbit/s I2C-compatible
- 16-bit Stereo Audio Bitstream, Sample Rate Up to 50 KHz
- On-Chip Debug System (JTAG interface), Nexus Class 2+, Runtime Control, Non-Intrusive Data and Program Trace
- 110 General Purpose Input/Output (GPIOs), Standard or High Speed mode, Toggle capability: up to 66MHz
- Packages: 144-ball TFBGA, 11x11 mm, pitch 0.8 mm; 144-pin LQFP, 22x22 mm, pitch 0.5 mm; 100-ball VFBGA, 7x7 mm, pitch 0.65 mm
- Single 3.3V Power Supply

Application Scenarios

The AT32UC3A3/A4 microcontroller is suitable for various embedded applications, including but not limited to:

• Consumer electronics
• IoT devices
• Robotics
• Industrial automation
• Home automation

Comparison

• High-performance 32-bit RISC microprocessor core
• Low power consumption
• High code density
• High performance
• Supports various external memories and storage devices
• Includes advanced encryption system
• Flexible USB configuration

• Limited number of GPIOs
• Requires 3.3V power supply
• Package options may not be suitable for all applications