AT32UC3A3128(2009) Ver la hoja de datos (PDF) - Atmel Corporation
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AT32UC3A3128 Datasheet PDF : 961 Pages
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AT32UC3A3
1. Description
The AT32UC3A3 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 empha-
sis on low power consumption, high code density and high performance.
The processor implements a Memory Protection Unit (MPU) and a fast and flexible interrupt con-
troller for supporting modern operating systems and real-time operating systems. Higher
computation capabilities are achievable using a rich set of DSP instructions.
The AT32UC3A3 incorporates on-chip Flash and SRAM memories for secure and fast access.
The Peripheral Direct Memory Access Controller (PDCA) enables data transfers between
peripherals and memories without processor involvement. The PDCA drastically reduces pro-
cessing overhead when transferring continuous and large data streams.
The Direct Memory Access controller (DMACA) allows high bandwidth data flows between high
speed peripherals (USB, External Memories, MMC, SDIO, ...) and through high speed internal
features (AES, internal memories).
The Power Manager 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 Device includes two sets of three identical 16-bit Timer/Counter (TC) channels. Each chan-
nel can be independently programmed to perform frequency measurement, event counting,
interval measurement, pulse generation, delay timing and pulse width modulation. 16-bit chan-
nels are combined to operate as 32-bit channels.
The AT32UC3A3 also features many communication interfaces for communication intensive
applications like UART, SPI or TWI. Additionally, a flexible Synchronous Serial Controller (SSC)
and an USB are available.
The SSC provides easy access to serial communication protocols and audio standards like I2S.
The High-Speed (480MBit/s) USB 2.0 Device interface supports several USB Classes at the
same time thanks to the rich Endpoint 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.
AT32UC3A3 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.
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32072A–AVR32–03/09
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