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USB MCUs tailored for PC human input devices

Posted: 28 Feb 2005 ?? ?Print Version ?Bookmark and Share

Keywords:cypress semiconductor? usb? usb? usb mcu? microcontroller?

Cypress Semiconductor Corp. released a new family of low-speed USB microcontrollers (MCUs) targeting PC human input devices, including keyboards, mice and wireless dongles.

Based on the company's M8 MCU architecture, the encore ii (enhanced Component Reduction) family offers a flash-based design that enables storage of wireless binding parameters as well as in-system reprogrammability. According to the press release, this new family also adds reduced power consumption and enhanced CPU capabilities. "The enCoRe II products offer important new features while meeting the low-cost requirements of this competitive market," added Trevor Davis, director of marketing for Cypress's Consumer and Computation Division.

The enCoRe USB technology features a crystalless oscillator. By integrating the oscillator on-chip, an external crystal or resonator is no longer needed, explained Cypress. The company has also integrated other external components commonly found in low-speed USB applications, including pull-up resistors, wake-up circuitry and a 3.3V regulator.

The enCoRe II family includes the CY7C639xx, CY7C638xx and CY7C633xx lines. The CY7C639xx line is the first to bring Cypress's enhanced component reduction technologies to keyboard designs. These chips are offered in 40-pin PDIP and 28-/48-pin SSOP packages, and are priced starting at $1.30 in 100,000-unit quantities.

The CY7C638xx line of enCoRe II controllers is targeted at high-end optical mice and wireless dongles. These devices are offered in PDIP, SOIC and QSOP packages, with pricing starting at 90 cents each in 100,000-unit quantities.

The CY7C633xx products target low-end optical and optomechanical mice. Available in 16-pin PDIP and SOIC packages, these devices are priced starting at just 85 cents in volume.

All of the new enCoRe II devices are sampling now with production availability in April. Cypress is also providing low-cost manufacturing chip-on-board support for high-volume enCoRe II products. A low voltage, low power non-USB version of the enCoRe II MCU targeting wireless applications will be available later this year, said Cypress.

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