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32bit MCU sol'ns provide secure encryption

Posted: 12 Dec 2011     Print Version  Bookmark and Share

Keywords:microcontroller  MCU  USB connectivity 

Atmel Corp. releases 13 new devices in 3 different product series in its 32bit AVR UC3 microcontroller solutions featuring high performance, digital signal processing (DSP) instructions, USB connectivity, secure encryption and capacitive touch support. In addition to new devices in the existing UC3 L and UC3 A Series, a new UC3 D Series of MCUs is now available.

Atmel's AVR UC3 product portfolio includes the AVR UC3L series of ultra-low power 32bit MCU, including new memory options and added USB functionality; the AVR UC3D that targets entry-level 32bit applications and includes hardware for capacitive touch support; and the AVR UC3A4, a high-performance, high-throughput UC3 device series with high-speed USB and 128kB of SRAM. The devices also offer an optional 256bit AES encryption decryption/encryption module.

The AVR UC3L—the Ultra-Low Power 32bit Microcontroller
The AVR UC3L is Atmel's 32bit MCU series with picoPower technology. This series is said to be ideal for portable consumer and battery-powered applications, board controllers, game pads, remote controls and human interface devices. The AVR UC3 L Series consumes down to 165µA/MHz in active mode, down to 600nA with RTC running, and down to 9nA in deep-sleep mode. picoPower devices offer true 1.62V operation, allowing all analogue modules, oscillators and Flash to be fully functional without compromise at 1.62V. SleepWalking, a picoPower technology capability that allows peripherals to make intelligent decisions and wake the CPU directly, is available in all UC3L devices. This allows the data to be analysed and qualified at a peripheral level so the CPU can stay in sleep longer, significantly reducing overall power consumption.

The UC3 L Series features the built-in capacitive touch peripheral, which supports capacitive touch buttons and sliders, and a new glue logic controller. Both can eliminate external components. To safeguard sensitive data, FlashVault code protection enables on-chip Flash to be partially programmed and locked, for secure on-chip storage of software intellectual property. Atmel expands the memory option of the currently available UC3L0 with 128kB and 256kB of Flash. These new devices also have 32kB of internal SRAM. The new UC3L4 devices are pin-compatible with the existing UC3L0 devices. The UC3L4 adds full-speed USB device connectivity to the UC3L series. The new UC3L4 devices come in 64kB, 128KB and 256KB on-board Flash options, and offer up to 32kB of internal SRAM.

The AVR UC3D—Entry-level 32bit MCU for Consumer Applications
The new AVR UC3D MCU is an entry-level 32bit series, targeted at product designs requiring low-power capacitive touch as well as other consumer and industrial applications. The series offers designers a rich feature set of devices containing a hardware QTouchcapacitive touch interface, USB full-speed device, RTC with calendar, 10bit ADC, USART, SPI, TWI, PWM and I2S . With SleepWalking technology integrated into the device, the UC3D MCU can be woken from sleep mode via a peripheral. In capacitive touch applications, the device can be put into sleep mode and woken by proximity touch. The capacitive touch module found on the UC3D supports up to 25 channels in hardware, and each channel can be configured as buttons, sliders and wheels. Multiple touch channels can be grouped together for better performance and greater flexibility in applications where different sensitivity levels are needed on different channels.


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