If you want a button or switch as an input on a microcontroller (MCU), you can use a “pullup resistor” so that the input is seen as a logical high when the (normally open) switch or button is closed. A pullup resistor is connected to Vcc, or logical high for your input, and therefore “pulls […]
What do you look for in MCUs, by application, across various vertical markets?
Embedded engineers design and develop electronics hardware and software for many different market segments, often called “vertical markets.” Major vertical markets include automotive, medical, industrial, military/aerospace, and consumer electronics. Of these major markets, some commonly desired attributes of electronics emerge. Automotive requirements include small size, low weight, low cost, power efficient, reliable electronics with ratings […]
A beginner’s guide to microcontrollers
by Jon Wilder Time after time I see beginners try to get started in embedded electronics, only to be overwhelmed and not know where to start. Some even make the mistake of trying to write their own code without first gaining a thorough understanding of the microcontroller/microprocessor they’re working with, the programming language they’re working […]
Serial EEPROM – A Great Form of Non-Volatile Storage
by Jon Wilder Most PIC microcontrollers have some form of non-volatile EEPROM on chip. However, the largest I’ve seen is 1KB available on the 18F series. There are many applications in which we may need a great deal more than this. The Storage You Don’t Have For instance, what if we have a MIDI device […]