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Cristal de cuarzo de bajo CL para microcontroladores con potencia ultra baja


News provided by

Seiko Instruments GmbH

Aug 29, 2011, 04:33 ET

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NEU-ISENBERG, Alemania, August 29, 2011 /PRNewswire/ --

Los desarrollos recientes de fabricantes de microcontroladores han servido para producir una serie destacada de microcontroladores de potencia ultra baja que se han optimizado para su uso desde baterías en sistemas portátiles. Se pueden conseguir ahorros energéticos adicionales con la implementación de las operaciones de stand-by con una frecuencia de oscilación reducida, con una frecuencia de reloj prevalente de 32 KHz. Esto permite las operaciones intermitentes con una frecuencia nominal completa en operaciones normales y una frecuencia muy baja de stand-by, de 32 KHz, suficiente para poder utilizar Watch-Dog-Timer (WDT), Real-Time-Clocks (RTC) y equipamiento similar, con requisitos de corriente de solo 0,7 microA o incluso menos. Esto permite unos tiempos de duración de batería más largos, pudiendo llegar a durar años. El objetivo de la reducción de potencia durante el periodo de stand-by (<0,7 microA a 1,8 V) ha servido para que Seiko Instruments ponga sus esfuerzos en el desarrollo de cristales de cuarzo de bifurcación de sintonizado con un consumo de corriente de 0,1 microA o incluso menor con un voltaje de suministro de 1,8 V. Los resultados de estos esfuerzos son los denominados productos de cuarzo de "bajo CL", que se dedican al uso de microcontroladores de potencia ultra baja.

Los cristales de cuarzo de "bajo CL" reales se ofrecen en dos paquetes diferentes. Los parámetros físicos son idénticos para ambas representaciones. La frecuencia de resonancia es de 32.768 KHz, siendo la capacidad de carga seleccionable entre 6 pF, 4,4 pF o 3,7 pF, y su tolerancia de frecuencia es de +/- 20 ppm.

El cristal de cuarzo VT-200-FL está alojado en un tubo de aluminio de 2,0 mm x 6,0 mm y cuenta con cables de conexión radiales.

El cristal de cuarzo SSP-T7-FL dispone de un paquete de plástico SMD con unas dimensiones de 7,0 mm x 1,5 mm x 1,4 mm.

El acuerdo de cooperación entre RENESAS ELECTRONICS y Seiko Instruments ha llevado a una referencia mutua dentro de las hojas de datos, informes de emparejamiento y en las páginas web. La parte de "bajo CL" de la página web de Seiko Instruments contiene informes de emparejamiento con los microcontroladores de potencia ultra baja RENESAS con consejos relacionados con el despliegue. Además, contiene entradas para emparejamiento con los microcontroladores de otros fabricantes, por ejemplo, Fujitsu, Intel. OKI, Panasonic, Ricoh, Sanyo, TI, Toshiba

Contacto: 

Paul Krisam, responsable de apoyo técnico de ventas del Departamento de Componentes
Seiko Instruments GmbH, Siemensstraße 9, 63263 Neu-Isenburg, Alemania
Tel: +49-6102-297-143, Fax: +49-6102-297-50-143, Móvil: +49-172-6396-127, e-mail: [email protected]

Página web: http://www.seiko-instruments.de

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