Wearable devices are mobile terminals that have "power consumption", and wearable OEMs are increasingly pursuing better-performing products and are beginning to introduce low-power and high-performance MCU products. A demand directly pushes the high-end MCU business opportunity to expand rapidly. The world's major MCU vendors are competing by constantly changing new products and solutions.
In terms of product form, wearable devices are also divided into smart bracelets, smart watches and smart glasses. They are divided into “low, medium and high†according to cost/function, and different levels of complete products. The requirements of the MCU are also different.
“Smart bracelets require lower power MCUs to ensure longer standby times, such as the STM32L0 series; smart watches require MCU products with the best balance of power consumption and performance, improving product flow while ensuring power consumption. Sex and operability, such as the STM32F4 series; smart glasses due to the very high display requirements, the STM32F429 series with built-in TFT driver and exclusive Chrom-ARTTM acceleration technology is more suitable." ST Ren Yuan said.
Raman Sharma, director of marketing for Silicon Labs Americas, told reporters: "Most of the wearable products have two key requirements - small form factor and long battery life. Therefore, most wearable products exist as peripherals for smartphones. They are positioned at the low end, are small in size and can be operated for long periods of time, and are powered by a replaceable battery, such as Silicon Labs' EFM32 Gecko MCU, which typically uses ARM Cortex-M MCU processors for the high-end wearable market. I prefer to use an ARM Cortex-A based application processor."
ROHM (Roma) respondents indicated that different grades of products require different specifications for MCUs. In addition to the processing power and operating speed of the CPU, the requirements for ROM capacity, RAM capacity, pin count, and peripheral functions are also different. LAPIS Semiconductor will target the object and develop the most suitable MCU according to customer needs.
In terms of the small size of wearable devices, highly integrated and complete system-level solutions are inevitable, such as integrating peripheral devices such as wireless chips, GPS and sensors into a single SOC.
"Internet of Things (IoT) SoC is bound to become a must-have engine for rapid innovation and integration in the wearable market. For Silicon Labs, mixed-signal integration will be the key to reducing the cost and complexity of IoT applications. Single system-on-a-chip (SoC) solutions for connectivity, sensor interfaces, and in the near future, we will see in the market that the original IoT SoC is specifically targeted at IoT applications including wearables. Optimized for low power consumption and wireless connectivity," said Raman Sharma.
He told reporters that these SoCs will integrate ARM Cortex-M cores, embedded Flash memory, analog/mixed-signal peripherals, multi-protocol transceivers that support ZigBee, Bluetooth and sub-GHz connections, sensor interfaces, all in one Small package, low cost and low power single chip products.
He stressed that to further expand the IoT and wearable markets, SoC is necessary. Developers will be able to quickly and easily create new wearable applications by adding power management, battery, antenna and software stacks. In order to reduce the cost of these applications and shorten time-to-market, software tools that simplify the application development process are also critical. In his view, the IoT SoC is more than just an engineering concept. It is a practical and achievable fact. It is a clear goal that Silicon Labs is actively investing and developing.
LAPIS Semiconductor has developed ARM-Cortex M0 and Bluetooth functions for smart watches, and is currently developing SoC-type products that use non-volatile memory for memory user programs. Next year, we plan to provide smart watch control with a single chip. LSI for function and communication functions. In addition, for smartphones, we will develop MCP (MulTI-Chip-Package) products with sensor-controlled MCUs with ARM-Cortex M0 as CPU, integrated acceleration sensors, and gyro sensors.
However, some manufacturers have expressed different opinions. "The market is dynamic, so the built-in functions of wearable devices are also changing. In order to achieve greater flexibility, we prefer to use separate MCUs. In the future, we must be in the field of wearable devices. It is a separate MCU and module coexistence, choose a separate MCU or SOC depends more on the customer's application." Ren Yuan said (ST) MCU marketing department senior engineer Ren Yuan said.
From the perspective of market applications, the Chinese market is dominated by low-end products, and many business opportunities are still emerging. In response to the Chinese market strategy, Ren Yuan said that ST will continue to enrich its MCU product line. The 32-bit STM32F030 series launched last year has achieved great success. Recently, the STM32L0 series has been launched for wearables. Further enrich the variety of the series.
Wu Jianhong, Embedded Product Business Development Manager of TI Semiconductor Division, said that TI's MSP430 MCU series products have been widely favored by engineers since 1998, and in the already launched ferroelectric products series, the FR57x series of ferroelectric products have been in business for two years. Previously released, sales in China are very good, and the FR59x and FR69x series will gradually be launched.
Wu Jianhong said that all of TI's MSP430 MCU products are pin-compatible in design, taking into account the needs of different customers. Old customers who have been using the TI MSP430 platform for the past 20 years can easily convert to the part of the ferroelectric MSP430, and the user's software can run directly. However, he suggested that in order to design the lowest power consumption of the product, the customer still has to debug the software according to the structure of the ferroelectric, so that the benefits of the ferroelectric can be fully utilized.
For the MCU's market sales and competitive landscape of wearable devices in 2014, most manufacturers believe that the wearable market is still in its infancy, but is growing and developing rapidly. They expect tens of millions of wearable products to be pushed in the next few years. To the market, ARM will be the leading processor platform in the wearable market, not only at the current but also for several years.
From a broad perspective, ARM Cortex-M processors will dominate the wearable market (low-end and mid-range products), and suppliers that offer the most energy-efficient MCUs will be able to gain significant growth in the fast-growing wearable market. Competitive advantage and maximum market share. In the high-end market, ARM Cortex-A series MCU and AP products will still dominate, and manufacturers focusing on smart phones and tablet AP chips will also get a cup. In any case, what the wearable master chip makers are currently doing is how to carry out the low-power, small-size and low-cost at the end, and is favored by the majority of wearable OEMs.
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