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Motion sensor enables precise hand movement control for portables

Austin, Tex.—Freescale Semiconductor has introduced a highly advanced low-power sensor based on proven micro-electromechanical system (MEMS) technology specifically engineered for handheld portable electronic devices.

Freescale's 3-axis MMA7660FC accelerometer integrates a number of smart motion features such as orientation, shake and tap detection with auto wake-up/sleep detection in a compact 3 x 3 x 0.9mm package. The MMA7660FC can be configured with custom portrait/landscape trip points for six orientations: left, right, up, down, back, and front. The MMA7660FC communicates directly with the main system processor through an I²C interface for communication simplicity and flexibility.

Freescale said it designed the MMA7660FC accelerometer to achieve up to five times longer battery life than current products on the market when continuously operating to determine motion. Configurable power saving modes and a power-select capability helps designers achieve optimal current consumption by choosing one of eight sample rates.

System-level power is reduced through an automatic configurable auto wake-up/sleep feature achieved without intervention or polling by the host processor. The MMA7660FC accelerometer provides conversion to digital values at a user-configurable output data rate, offering proportional savings in supply current and power.

Low current consumption specifications include off mode: 0.4 µA; standby mode: 2 µA; and active mode: 47 µA at one sample per second.

Pricing: Starts at $1.39 (USD) in 10,000-piece quantities.
Availability: Now.

Datasheet: click here.

Freescale Semiconductor, www.freescale.com

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