DSP, Micros & Memory


Crystal-free USB MCUs

14 November 2012 DSP, Micros & Memory

Silicon Laboratories introduced the Precision32 microcontroller (MCU) family. Based on the ARM Cortex-M3 processor, the product family includes 32 SiM3U1xx and SiM3C1xx MCU products with footprint-compatible USB and non-USB options.

Offering a highly integrated, flexible architecture, a rich peripheral set, low power and Eclipse-based development tools that are downloadable at no charge, the Precision32 family is suitable for a wide range of applications including portable medical devices, point-of-sale peripherals, motor control, industrial monitoring, barcode scanners, optical touchscreen interfaces, sensor controllers and home automation systems.

Integrated precision oscillators with an advanced phase-locked loop (PLL) eliminate the need for a costly 8 MHz crystal by providing the clocking accuracy necessary for crystal-less USB operation while running the core independently at any frequency from 1 to 80 MHz.

An internal 5 V voltage regulator enables the MCU to be powered directly from USB or a 5 V source without the need for an external regulator. Six high-drive I/Os (up to 300 mA each) can directly drive high-power LEDs, small motors, buzzers and power MOSFETs, as well as serve as a boost converter controller. Up to 16 capacitive touch channels eliminate the need for separate touch sensor ICs in applications requiring buttons, sliders or wheels.

The Precision32 family offers a complete USB 2.0 PHY and analog front-end interfacing directly to the USB connector.

For more information contact Gary de Klerk, NuVision Electronics, +27 (0)11 608 0144, [email protected], www.nuvisionelec.co.za



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