MCU and sensor integration enhances intelligence

The iSuppli report stated that due to the strong momentum in sales of mobile phones, game controllers and digital cameras, the global MEMS market is expected to grow by 11% in 2010. With the increasing application of sensors, and increasing the level of modular integration and intelligence has become the key to winning the market, Freescale Xtrinsic intelligent sensing platform has thus emerged.

The Xtrinsic smart sensor platform can be described as an "integrator." According to Chen Guanghui, director of channel development for Freescale’s Sensors Asia Pacific and global distributors, the benefits of the Xtrinsic Sensing Solution are: Firstly, it improves the level of intelligence. It can be programmed and can be driven by software. Freescale also offers customizable software. , The customer can design the required application program accordingly; The second is to improve the integration level, it integrates 32-bit MCU, power management, and up to 12 sensors in parallel, which can fully meet the requirements of multiple applications.

When Chen Guanghui talked about why 32-bit MCUs were chosen, he said that with the increasing demand of users for the user experience presented by the terminal devices, the number of parallel sensing devices on the Xtrinsic platform will gradually increase. "32-bit MCUs can better handle the signals delivered by multiple sensors on the chip and power supply communications, RF connections and other requirements, thereby helping the host MCU to perform a variety of tasks faster." Chen Guanghui said, "Then, MCU and sensor integration Will become the development trend of the future market."

As part of Freescale's Xtrinsic Sensing Solution Series, in addition to the already announced MMA8450Q, Freescale has also expanded the MMA845xQ family and introduced 14-bit MMA8451Q and 12-bit MMA8452Q devices. These devices are compatible with each other. Chen Guanghui said that the MMA845xQ accelerometer series provides embedded algorithms and calculations to improve sensor intelligence to a new level and extend battery life.

The reporter learned that the current market's acceleration sensor can only achieve 12-bit digital output. In contrast, the 14-bit MMA8451Q has advantages. More importantly, the MMA8451Q includes an on-chip FIFO (first-in, first-out) memory buffer that can hold 32 sample sets of X/Y/Z axis data. By reducing the host processor load, it helps to improve power consumption and reduce system response time. "The combination of FIFO and host processor can increase the current percentage of power consumption from 78% to 96% or higher, which is very important for portable applications such as mobile phones." Chen Guanghui pointed out.

Chen Guanghui also revealed that the current series of products in the Asia Pacific region such as South Korea, China and other smart phone market has achieved good market acceptance, in the United States has also been adopted by a smart phone brand.

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