Very often it is more profitable to make a massive batch of a single worldwide chip and set it in different instances than to operate a dozen distinct. At the chips placed in the instances with a few leads, portion of those vents (in this context, by ports we'll comprehend the contact areas on the processor's surface serving for communicating with the outside world) will simply stay unconnected. Often makers go farther - to boost the demand and price for microcontrollers using a significant number of legs, so they purposely cut off the performance of these with fewer legs - disable certain purposes, limit the available memory capacity, etc.. So on the grounds of one chip type a collection of microcontrollers, substantially different in terms of memory size and pair of peripheral modules, occasionally at times and many times the cost.
The development of the topology and debugging of these technical procedures of a new chip is extremely expensive, and the space on the plate with a single chip is generally not large. It is rewarding for producers to create chips in large batches, but users want microcontrollers in different housings - it's important for a person to acquire a bigger and more economical housing, another opposite needs more leads to control both the LCD or external memory with a parallel interface. It's rewarding for manufacturers to cover all the niches so that customers don't run into rivals without finding the best model for themselves.
My name is Vasily Strizhkov, I'm a representative and top programmer of the company https://axonim.com/. A little"self-promote": we're pioneers in the sphere of development and implementation of electronic devices, we cooperate with such giants as Intel and Texas Instruments. But this guide is not about usbut about production of so-called"hearts" of the goods - microcontrollers. How can brand new MCU series seem? With the help of what technology are they created?
The physically active portion of a microcontroller, in addition to the overwhelming quantity of other chips, is usually formed on a mono-silicon wafer (let's call it, within this context, a chip). Chips occupy a tiny area, it's technologically advantageous to make large diameter wafers, thus typically a great number of processors, such as honeycomb, are placed on one big wafer and shaped in 1 process. Then the plates are sliced into slices, receiving different chips, which are subsequently put in the cases.