MCUs are now shaping the embedded world!

As promised, here’s a discussion I had with STMicroelectronics (ST) on its new 8-bit microcontroller, the STM8S — the STM8S105 and STM8S207 MCUs for industrial and consumer applications. The discussion focused on how MCUs are now beginning to shape the embedded world.

Addressing this specific query, Patrice Hamard,8-bit Product Line Marketing Manager, STMicroelectronics, said that ST is reshaping the microcontroller with a solid offer on 8bit that has a strong overlap with STM32 in terms of feature and price. “Therefore, we are going to cover the need for embedded functions with only two architectures. Compared to the previous segmentations (8-, 16- and 32-bit), we are changing it to become 8- and 32-bit only,” he clarified.

On the STM8S, Hamard said that the key application areas addressed by the MCU are industrial and appliances in consistent with the robustness and the reliability. He said: “The STM8S family is supporting 5V as well as 3V, thereby making it ideal for the platform evolution as well as a good offer for the consumer and mass market. The cost advantage given with the fine lithography also allows us to propose this family to key customers in PC peripherals and consumer applications.”

Rich feature set an imperative in MCUs
Rich feature set is an imperative in the MCU market. How is the STM8S meeting this requirement?

According to him, the feature set is driven by the need to reduce the bill of materials (BoM). The robustness allows simple design and board layout with less filtering. The clock controller gives low noise emission figure, thereby reducing the need for shielding. The precise clock allows the suppression of the external resonator. The embedded true E²Data suppresses the need for additional E²PROM. Safe reset (no grey area) makes the reset system safer suppressing the need for external reset circuit.

The clock system, as well as the two independent watchdogs will contribute to pass safety regulations together with ST’s class B libraries. All communications peripherals are available as well — (U(S)ART, I²C, SPI, CAN, LIN), advanced 16-bit timers and timebase, fast and precise 10-bit ADC.

Finally, the 8-bit core is one of the most efficient with 20MIPS at 24MHz. Built around the 8-bit data path, the micro has 16bit registers and 32bit memory memory width.

So, how does the STM8 deliver high performance with excellent code compactness?

Hamard said that thanks to the new CISC instruction set designed in collaboration with ST’s C compiler partners, the compactness has been significantly improved. The Harvard architecture with its three-stage pipeline allows to reach up to 20MIPs @ 24MHz.

ST is offering family demonstration boards and instrument cluster reference designs as well. In fact, there are currently solutions available in ST with the STM8S/128-EVAL, as well as with third parties like raisonance with the REVA KIT. Many reference designs are complete or in progress demonstrating motor control (sensorless brushless DC motors), power management, smart card protocol, capacitive sensing, etc.

Demand for low-power MCUs
According to Hamard, the trend of low power is coming from the increase of the application base on battery in consumer and personal care, combined with a strong demand for power meters (electricity, water and gas). Energy saving is important and electronics can contribute a great deal to reduce the overall energy consumption.

“The STM8S is not specifically aiming low power applications even though the features of the family are good for many low power devices. It is in our plan to introduce later this year a dedicated family to address low voltage/low power arena,” he added.

Why 8-bit?
Considering that there are 8- vs. 16- vs. 32- bit MCUs, and also that affordable prices are perhaps the reason that the Asian region is witnessing a migration to 16-bit architectures. In this scenario, why 8-bit?

Hamard said: “Everything depends on what we consider to be “affordable” and who we are talking to. For large quantity and simple functions, affordability is between $0.20 cents to $0.50 cents. By construction, a 16-bit device cannot be as effective as an 8-bit product. We even believe that the microcontroller prices will decrease and address applications served with few discrete devices. The main reason is the consistency of architecture.

“The construction of the 32- and 16- are very similar, especially with the new generation of ARM-based products. The only reason to go from 8- to 16-bit is for performance improvement. We say that our 32-bit portfolio is already overlapping the 8-bit segment in performance and in price, leaving no room for the third core structure.

“Taking a closer look at our portfolio, you will realize that our 32-bit is also providing 16-bit instruction set, and our 8-bit is built with 16-bit register, 24-bit memory address bus, etc.”

Dexcel on growth drivers for Indian embedded design industry

It is my endeavor to write about semiconductors, solar/PV, EDA. FPGAs, embedded, etc., and related companies and solutions via this blog. One of the pleasures of writing a semicon blog is in being able to connect with and make a whole lot of friends from different countries, cultures, and companies, as well as bloggers.

One such gentleman is Ravinder Gujral or Ravi, as he’s popularly called, Director – Business Development, Dexcel Electronics Designs Pvt. Ltd. Dexcel, based very much in Bangalore, India, is among one of the emerging companies in the embedded space in the country. Ravi contacted me, like several others, via my blog! Likewise, I was elated to find myself a new friend and reader! Later, we met during Altera’s SOPC event, where Dexcel was exhibiting as well.

Dexcel is an electronics design house with capabilities in embedded systems development, firmware Designs and development, DSP processors based designs, imaging software, device drivers, Linux porting, system level designs and development, application and automation software, development of audio and video codec, telecom related stacks, board designs and FPGA based digital designs services, and providing end-to-end solutions to customers.

Dexcel has an alliance and partnership with Altera (ACAP and DSP partner), and with Analog Devices (DSP collaborator), Texas Instruments (DSP third party Network Member), Actel (solution partner), Atmel (AVR 8-Bit RISC Consultants), Montavista Linux developer, etc. Quite impressive!

Estimate of Indian embedded industry
Naturally, our discussion veered toward embedded. Providing his estimate of the embedded design industry in India, Gujral said as per the survey conducted by the India Semiconductor Association (ISA) and Frost & Sullivan, the projected Indian semiconductor and embedded design industry will grow from $3.25 billion in 2005 to $14.42 billion in 2010 and to $43.07 billion in 2015. The Indian design organizations are moving beyond simple labor-cost arbitrage to become true contributors to product innovation.

Going forward, it is important to keep an eye on the drivers for embedded design. The main growth drivers for embedded software in the coming period will be mobile communications, military applications, networking devices and providing more intelligence and connectivity to consumer devices.

Gujral said: “The explosion of embedded devices is made possible mainly due to the rapid growth of semiconductor chips each year, and semiconductor devices becoming faster, cheaper and less power hungry. As the Indian domestic market is growing rapidly, this growth trend will continue. Simultaneously, there are technical challenges to design such products and services, and the availability of technical qualified resources has become more important.”

Localizing product designs and manufacturing
Given that India’s strength has been in embedded, would the biggest growth factor for embedded come from the localization of product design and manufacturing from India?

Indeed, it is! Gujral noted: “The growth factor for embedded companies will come from localization of product design and manufacturing from India. However, we should be doing well in localization of product design, rather than in manufacturing. Indian design engineers are strong in product innovation and design processes, while on the other hand, our manufacturing ecosystem is not as competitive as China.”

Going forward, India should be focused on fine tuning its design processes and best practices to become more efficient and productive, compared to counterpart in the US and Europe. “We have to develop strong domain technical knowledge to bring more innovation in product development,” added Gujral.

Embedded computing — 15mn devices not so far away!

It has been close to three weeks since the Intel IDF @ Taipei, Taiwan. However, way too many things happened there, which still deserve a mention. One such event would be the keynote on embedded Internet by Doug Davis, Intel’s Vice President, Digital Enterprise Group and General Manager, Embedded and Communications Group.

Today, there are 5 billion connected devices, and this number should likely go up to 15 billion by 2015, as per IDC. However, technology barriers need to be overcome. Davis cited these challenges as reliability and long life, software scalability, low power and low cost, privacy and data security, IPv4 addressing and open standards. As of now, the Intel architecture (IA) is said to be (due to lack of any good competition) the preferred architecture for the embedded Internet.

While on embedded products, post the Intel Atom processor, Davis said that the Menlow XL is likely for a Q1-09 introduction. The associated market segments include retail, PoS, digital signage, kiosks, vending, ATM, etc.

On digital PoS for retail markets, Davis highlighted India, and rightly so, adding that digital retail PoS would find applications, given the growing and quite affluent Indian middle class. Such a digital PoS device could improve inventory management and transaction security, allow more efficient space utilization, etc. Yet another application is digital signage for business intelligence [as informative displays].

Davis showed all of us MediaCart’s example. MediaCart is providing a unique shopping experience. It is trying to revolutionize the shopping experience with a computerized shopping cart that assists shoppers, delivers targeted communications at the point of purchase, and streamlines store operations. Incidentally, Singapore’s Venture GES was contracted by MediaCart to develop the new shopping experience cart.

Pervasive embedded computing
Davis believes that embedded computing would become more pervasive in the days ahead. “The Intel architecture has all of the unparalleled scalability to meet these needs,” he added.

Davis estimated that China could go on to become the world’s largest semiconductor market over the next five years or so. Semiconductor TAM for industrial automation is likely to grow from $13.5 billion in 2008 to $17.5 billion in 2012. India is said to be the second largest destination for industrial automation, which is interesting, and something to look forward to.

Digital factory
We have all had some visions, sometimes of how a digital factory would look like? And, who would be working at such a factory. Possibly, robots, or industrial robots would make up the attendance!

Well, if KUKA, a company that builds the world’s leading robotic and automation devices is to be believed, we are a little closer than before to this vision or dream. Bruno Geiger, managing director, Asia Pacific, KUKA, pointed out in his chat with Davis that the company makes robotic and automation devices based on Intel’s platorms. That, ‘takes us closer to the vision of a digital factory!’ This is a great example of multi-core in industrial automation.

Portal for embedded designers
Getting back to the embedded Internet, Davis said that the greatest challenge for customers is to integrate new technologies. To address this need, Intel is investing in a new Web portal for embedded designers. He announced that the Intel Architecture Embedded Design Center, a Web portal for embedded designers, will likely get launched in the spring of 2009. This is indeed something to look forward to!

Asia has all the trappings to become the largest market for embedded computing, and Taiwan, the largest market for automation. Well, don’t count India out! Embedded systems and software is India’s strength, and don’t be surprised to see and hear about lots of such activities from the country.