BULLETPROOFING YOUR PRODUCT DESIGN For Wireless Products

In wireless product development, how do you select the right communication technologies, from identifying the specific hardware and software to delivering the finished product?

- KOUSIK BARATHWAJ is Application Specialist from Murata Electronics

How do you define a successful product? There are technologically great products that fail to compete in the market. Why? Because those technologies do not understand the pulse of the market. Some product failures can be avoided by better design and through extensive testing.

The key is to identify the problem first and then narrow it down to the technology that can address it.

Product development stage 1: Component selection

The first critical decision in embedded product design is selecting the right processing unit: the right microprocessor unit (MPU) or the right microcontroller unit (MCU).

MPUs, commonly found in laptops and general-purpose systems, offer high flexibility and performance but require external elements, such as RAM, ROM, and storage, to achieve full system functionality. These systems are highly flexible for parallel processing of multiple threads. The computing speed is significantly higher than that of MCUs, thanks to their built-in memory management units, which facilitate memory address translation for hosting operating systems like Linux or Windows.

MCUs, or microcontroller units, are highly integrated. Everything is packed into a single chip. They are built for dedicated tasks with real-time constraints, offering predictable, low-latency performance. For applications such as automotive airbags, where every millisecond counts, MCUs paired with real-time operating systems are essential. The choice ultimately hinges on resource demands, timing sensitivity, and system complexity.

Stage 2: Selecting the right wireless technology

After selecting the required MPU or MCU, choosing the right wireless technology remains one of the trickier calls, as there is a plethora of options in embedded system design.