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MCUs tout full-speed USB connectivity

Posted: 20 Apr 2011 ?? ?Print Version ?Bookmark and Share

Keywords:USB connectivity? analog IC? microncontroller?

Silicon Laboratories Inc. introduces two USB MCU families that provide a fast and economical path to USB connectivity. Expanding on Silicon Labs' USB MCU portfolio, the C8051F38x and C8051T62x/32x USB MCU families are designed for applications such as home automation systems, thermostats, USB dongles, smart card readers, GPS localisers, touch panels, sensor data loggers, portable medical devices, weigh scales, USB speakers, serial communication bridges, games and electronic toys.

The demand for USB solutions continues to rise. Adding this universal but complex interface to embedded products can be challenging for developers lacking USB software expertise. Silicon Labs developed the USB MCU families to simplify the addition of USB connectivity to embedded designs. The families, which include 22 products with flash and one-time-programmable (OTP) options, feature a full-speed USB 2.0 interface engine, outstanding processing performance and USB throughput, precision analog functionality, and clock recovery capability to enable crystal-less USB operation for reduced component count and BOM cost.

The C8051F38x MCU family's analog/mixed-signal capabilities enable developers to implement USB connectivity without using a high-end MCU. The flash-based F38x devices are pin- and code-compatible with Silicon Labs' existing C8051F34x USB MCUs for easy migration, while offering an additional I2C interface, a higher performance analog-to-digital converter (ADC), lower power consumption and additional timers.

The C8051T62x/32x OTP MCUs are designed for cost-sensitive USB applications. The scalable T62x/32x family enables developers to select the most convenient set of digital and analog peripherals optimized for their application needs and cost targets. The OTP-based USB MCUs provide many of the same peripherals and similar functionality available from Silicon Labs' flash-based devices at a reduced cost.

The F38x and T62x/32x families include USB MCUs featuring an ADC that enables high precision measurements, eliminating the cost of using external ADCs. The on-chip ADC and high-speed comparators perform up to five times faster than competitive offerings, easing development of analog-intensive applications such as sensor data loggers, weigh scales, gaming controls and blood pressure monitors.

Samples and production quantities of the C8051F38x and C8051T62x/32x USB MCUs are available now in 4x4mm and 5x5mm QFN packages. Pricing begins at $2.12 in 10,000-unit quantities for the F38x flash-based devices and $1.07 for the T62/32x OTP MCUs. The C8051F380DK development kit is available for $99, and the C8051T620DK and C8051T622DK kits are both priced at $129. The TOOLSTICK381DC daughter card is available for $9.90.

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