Datasheet

32133D–11/2011

UC3D

1. Description

The UC3D is a complete System-On-Chip microcontroller based on the AVR32UC RISC proces-

sor running at frequencies up to 48MHz. AVR32UC 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 fast and flexible interrupt controller for supporting modern operat-

ing systems and real-time operating systems.

Higher computation capability is achieved using a rich set of DSP instructions.

The Peripheral Direct Memory Access (DMA) controller enables data transfers between periph-

erals and memories without processor involvement. The Peripheral DMA controller drastically

reduces processing overhead when transferring continuous and large data streams.

The Power Manager improves design flexibility and security. Power monitoring is supported by

on-chip Power-On Reset (POR), and Brown-Out Detector (BOD). The device features several

oscillators, such as Oscillator 0 (OSC0), 32 KHz Oscillator and system RC oscillator (RCSYS),

and two Phase Lock Loop (PLL). Either of these oscillators/PLLs can be used as source for the

system clock.

The Watchdog Timer (WDT) will reset the device unless it is periodically serviced by the soft-

ware. This allows the device to recover from a condition that has caused the system to be

unstable.

The Asynchronous Timer (AST) combined with the 32KHz crystal oscillator supports powerful

real-time clock capabilities, with a maximum timeout of up to 136 years. The AST can operate in

counter mode or calendar mode. The 32KHz crystal oscillator can operate in a 1- or 2-pin mode,

trading pin usage and accuracy.

The Frequency Meter (FREQM) allows accurate measuring of a clock frequency by comparing it

to a known reference clock.

The Full-Speed USB 2.0 Device interface supports several USB Classes at the same time

thanks to the rich End-Point configuration.

The device includes three identical 16-bit Timer/Counter (TC) channels. Each channel can be

independently programmed to perform frequency measurement, event counting, interval mea-

surement, pulse generation, delay timing, and pulse width modulation.

The Pulse Width Modulation controller (PWMA) provides 12-bit PWM channels which can be

synchronized and controlled from a common timer. Seven PWM channels are available,

enabling applications that require multiple PWM outputs, such as LCD backlight control. The

PWM channels can operate independently, with duty cycles set independently from each other,

or in interlinked mode, with multiple channels changed at the same time.

The UC3D also features many communication interfaces for communication intensive applica-

tions. In addition to standard serial interfaces like USART, SPI or TWI, USB is available. The

USART supports different communication modes, like SPI mode.

A general purpose 8-channel ADC is provided; It features a fully configurable sequencer that

handles many conversions. Window Mode allows each ADC channel to be used like a simple

Analog Comparator.

The Inter-IC Sound controller (IISC) provides easy access to digital audio interfaces following

I2S stereo standard.